289 lines
15 KiB
JSON
289 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-2026-64432",
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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": "2026-07-19T15:36:31.787Z",
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"datePublished": "2026-07-25T08:51:07.791Z",
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"dateUpdated": "2026-10-19T20:38:28.427Z"
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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": "2026-08-17T04:55:33.145Z"
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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: validate Dirty Page Table capacity in log_replay copy_lcns\n\nIn the analysis pass of $LogFile journal replay, log_replay() copies\nLCNs from each action log record into an existing Dirty Page Table\n(DPT) entry without bounding the destination index. A crafted NTFS\nimage with DPT entry lcns_follow=1 and an action log record with\nlcns_follow=2 produces a kernel slab out-of-bounds write at mount\ntime:\n\n BUG: KASAN: slab-out-of-bounds in log_replay+0x654c/0xdb60\n Write of size 8 at addr ffff8880095e1040 by task mount\n\nTwo attacker-controlled fields can drive j+i past the allocated\npage_lcns[] array:\n\n 1. dp->lcns_follow (capacity) can be smaller than lrh->lcns_follow.\n 2. lrh->target_vcn may be smaller than dp->vcn, making the u64\n subtraction wrap to a huge size_t.\n\nValidate target VCN delta and per-record LCN count against the\nDPT entry capacity, bail via the existing out: cleanup label with\n-EINVAL.\n\nThis mirrors the bounds-check pattern added in commit b2bc7c44ed17\n(\"fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot\")\nand commit 0ca0485e4b2e (\"fs/ntfs3: validate rec->used in\njournal-replay file record check\")."
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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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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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:L - The vulnerable journal-replay code is reached by mounting a crafted local block-device or loop-backed NTFS image, not through network traffic.\nAC:L - Crafted DPT and action records deterministically trigger the out-of-bounds write without a race or conditions beyond attacker control.\nPR:N - Although direct mounting requires initial-namespace CAP_SYS_ADMIN, an unprivileged attacker can provide the crafted volume for a privileged victim to mount and therefore needs no privileges.\nUI:R - A victim must attach, select, or mount the attacker-supplied NTFS volume; replay occurs during that mount even when read-only.\nS:U - The corruption and resulting impacts occur within the host kernel's existing security authority, without crossing a virtualization or other scope boundary.\nC:H - The attacker controls a sequential kernel slab out-of-bounds write that can corrupt adjacent objects and plausibly enable kernel code execution and arbitrary memory disclosure.\nI:H - The attacker-controlled 64-bit overwrite can corrupt kernel objects, pointers, or control data, making arbitrary modification and control-flow hijacking defensible.\nA:H - The reproduced slab out-of-bounds write can cause an immediate kernel oops or panic, and malformed volumes can trigger it repeatedly when mounted."
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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/fslog.c"
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],
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"versions": [
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{
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"version": "b46acd6a6a627d876898e1c84d3f84902264b445",
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"lessThan": "964c3fae1dfc49dde5468eace940f199cda234e9",
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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": "b46acd6a6a627d876898e1c84d3f84902264b445",
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"lessThan": "946046841013ebac8492ef49651c53638d7a9a6a",
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"status": "affected",
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{
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"version": "b46acd6a6a627d876898e1c84d3f84902264b445",
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"lessThan": "c6f9e804f73ef809529865fbc7256dd189ff8c33",
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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": "b46acd6a6a627d876898e1c84d3f84902264b445",
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"lessThan": "cf28fc1658463d768657cf1c27a83980d4ba7ef2",
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"status": "affected",
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"versionType": "git"
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{
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"version": "b46acd6a6a627d876898e1c84d3f84902264b445",
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"lessThan": "f433acc85b86f327d03ba8b03a33c105c51053de",
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"status": "affected",
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{
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"version": "b46acd6a6a627d876898e1c84d3f84902264b445",
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"lessThan": "57382ec6ac63b63dce2789e835fded28b698ae79",
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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/fslog.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": "6.12.96",
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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": "6.18.39",
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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": "7.1.4",
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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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"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/964c3fae1dfc49dde5468eace940f199cda234e9"
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"url": "https://git.kernel.org/stable/c/c6f9e804f73ef809529865fbc7256dd189ff8c33"
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{
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"url": "https://git.kernel.org/stable/c/cf28fc1658463d768657cf1c27a83980d4ba7ef2"
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"url": "https://git.kernel.org/stable/c/f433acc85b86f327d03ba8b03a33c105c51053de"
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{
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"url": "https://git.kernel.org/stable/c/57382ec6ac63b63dce2789e835fded28b698ae79"
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}
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],
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"title": "fs/ntfs3: validate Dirty Page Table capacity in log_replay copy_lcns",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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-2026-64432",
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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": "no"
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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": "2026-10-16T15:40:33.822171Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-787",
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"description": "CWE-787 Out-of-bounds Write"
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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": "2026-10-19T20:38:28.427Z"
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}
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}
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]
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}
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} |