277 lines
15 KiB
JSON
277 lines
15 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-72194",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-09T03:40:39.911Z",
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"datePublished": "2026-08-15T05:53:54.125Z",
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"dateUpdated": "2026-10-16T18:45:01.099Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-17T05:41:20.799Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow\n\nindx_find_buffer() recursively descends the B+ tree index with no depth\nlimit. A crafted NTFS image with circular index node references causes\nunbounded recursion, overflowing the kernel stack and panicking the\nsystem.\n\nThis is reachable by mounting a malicious NTFS filesystem (e.g. from a\nUSB drive via desktop automount) and deleting a file whose index entry\ntriggers the rebalancing fallback path in indx_delete_entry().\n\nAdd a depth parameter and bail out with -EINVAL when it reaches the\nfnd->nodes array bound, matching the constraint already enforced by\nfnd_push() in indx_find().\n\nThe related function indx_find() was previously patched for a similar\ninfinite-loop issue (commit 1732053c8a6b), but indx_find_buffer() was\nmissed."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - ntfs3 registers export_operations; on NAS/hybrid servers exporting an NTFS volume via nfsd or ksmbd, a remote client's unlink reaches vfs_unlink→ntfs_unlink_inode→ni_remove_name→indx_delete_entry→indx_find_buffer without any local syscall from the attacker.\nAC:L - The attacker fully controls on-disk INDEX_ENTRY VCN pointers and can craft circular B+ tree references so indx_find_buffer() recurses deterministically until stack exhaustion; no race, special heap layout, or other uncontrollable condition is required beyond presenting the image and issuing unlink.\nPR:N - Exploitation requires only supplying a malicious NTFS image later mounted by root/udisks2/automount, or write permission on an NFS/SMB-exported NTFS share (including guest/anonymous write); no init-namespace root, CAP_SYS_ADMIN, or other elevated host credentials are needed on the trigger path.\nUI:N - Once an administrator has mounted and optionally exported the NTFS volume—or desktop/kiosk automount has attached removable media—the attacker issues unlink directly; no further victim clicks, file opens, or cooperative actions beyond that standing configuration are required.\nS:U - Impact is kernel stack overflow and panic within the host kernel's security authority; this is standard local or network filesystem exploitation, not a VM escape, IOMMU bypass, or cross-scope sandbox breakout.\nC:H - Unbounded recursion overflows the kernel stack, corrupting stack memory before the guard-page fault; under overestimation guidance, kernel stack corruption is treated as potentially enabling arbitrary kernel memory disclosure or information leakage via control-data overwrite.\nI:H - Recursive stack exhaustion corrupts return addresses and adjacent stack frames on the kernel stack, plausibly enabling control-flow hijack or arbitrary kernel modification even though the immediate failure mode is a panic.\nA:H - The fix commit and call path confirm unbounded recursion overflows the kernel stack and panics the system; any kernel oops, stack guard fault, or panic from this path scores Availability High."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ntfs3/index.c"
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],
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"versions": [
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{
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"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
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"lessThan": "99031d4f63c785d2a985b6a4c64c4256f7117052",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
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"lessThan": "65357a81f64cb3fbe13b4b937586755e4b3a072f",
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"status": "affected",
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"versionType": "git"
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"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
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"lessThan": "96fb64f9da86fd2dbd78fbe9d9e41ae27e12ce34",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
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"lessThan": "78612f478f9fadcec4f9b3b089970da67ffb47e9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
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"lessThan": "908c9243ba309997b73cbda3e4c563d0fb345ee9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
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"lessThan": "fdf50c788e0991e42a187ff75479a0df7fb752f1",
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"status": "affected",
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"versionType": "git"
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{
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"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
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"lessThan": "1ebd684b8f627f75bc3e03f8b2ad8400fd1f02cd",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ntfs3/index.c"
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],
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"versions": [
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{
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"version": "5.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.212",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.178",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.97",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.40",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.15",
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"versionEndExcluding": "5.15.212"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/99031d4f63c785d2a985b6a4c64c4256f7117052"
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"url": "https://git.kernel.org/stable/c/78612f478f9fadcec4f9b3b089970da67ffb47e9"
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"url": "https://git.kernel.org/stable/c/fdf50c788e0991e42a187ff75479a0df7fb752f1"
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"url": "https://git.kernel.org/stable/c/1ebd684b8f627f75bc3e03f8b2ad8400fd1f02cd"
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}
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],
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"title": "fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-72194",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T18:43:35.223042Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-16T18:45:01.099Z"
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}
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}
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]
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}
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} |