214 lines
11 KiB
JSON
214 lines
11 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-2026-74332",
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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": "2026-08-15T05:44:03.885Z",
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"datePublished": "2026-08-15T05:58:25.112Z",
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"dateUpdated": "2026-10-16T18:55:33.526Z"
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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": "2026-08-17T05:45:58.074Z"
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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\nASoC: amd: acp-sdw-sof: Bound DAI link iteration\n\ncreate_sdw_dailinks() walks sof_dais until it finds an entry with\ninitialised cleared, but sof_dais is allocated with exactly num_ends\nentries. If all entries are initialised, the loop reads past the end of\nthe array.\n\nPass the allocated entry count to create_sdw_dailinks() and stop before\nreading past the array."
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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:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.4,
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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 bug is in create_sdw_dailinks() called from mc_probe() during SOF AMD PCI probe and platform_device_register_data(\"amd_sof_sdw\"); there is no network, Bluetooth, or remote-packet path—only onboard SoundWire topology from ACPI/firmware on AMD ACP63/70 laptops.\nAC:L - On affected AMD SOF SoundWire machines where every ACPI endpoint gets its own dailink (aggregated=0), all num_ends array slots are initialised and the unbounded while loop deterministically performs a slab out-of-bounds read on every probe, with no race or attacker-controlled memory layout required.\nPR:N - The vulnerable path runs automatically during kernel driver probe at boot with no authentication, capability, or userspace gate; snd_sof PCI binding and amd_sof_sdw machine registration occur from the PCI ID table without any privilege check on this code path.\nUI:N - Exploitation requires no victim action—the out-of-bounds access occurs inside mc_probe() during automatic machine-driver registration before any ALSA device open, mount, or other user interaction.\nS:U - The out-of-bounds read and any resulting kernel fault or heap corruption stay within the host kernel audio driver security boundary; this is not a VM escape, IOMMU bypass, or cross-authority sandbox breakout.\nC:H - The loop reads the initialised field past the kmalloc sof_dais[num_ends] boundary (KASAN slab-out-of-bounds, read size 1); if adjacent slab data is non-zero the walk continues, interpreting out-of-bounds asoc_sdw_dailink structures and dereferencing garbage list_head endpoints in create_sdw_dailink().\nI:H - When the out-of-bounds initialised byte is non-zero, create_sdw_dailink() processes attacker-uncontrolled dailink metadata and advances the dai_links pointer beyond the devm_kcalloc(num_links) allocation, enabling out-of-bounds writes into adjacent kernel heap objects during DAI link construction.\nA:H - Continuing past the array causes list_for_each_entry() on uninitialised endpoint lists and wild-pointer dereferences that produce a kernel oops/panic during probe; even the minimal one-byte slab OOB read is a confirmed memory-safety violation that can destabilize the audio subsystem on every boot of affected hardware."
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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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"sound/soc/amd/acp/acp-sdw-sof-mach.c"
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],
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"versions": [
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{
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"version": "6d8348ddc56ed43ba39d1e8adda13299201f32ed",
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"lessThan": "0a5ff4000dd7a390139dd7823fef1de4963e490a",
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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": "6d8348ddc56ed43ba39d1e8adda13299201f32ed",
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"lessThan": "9e82497138abea7d5c6e65015663d907fbcbf6b4",
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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": "6d8348ddc56ed43ba39d1e8adda13299201f32ed",
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"lessThan": "86a64c049873fe4d4a6a378e27a333ab5631c4b2",
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"status": "affected",
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},
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{
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"version": "6d8348ddc56ed43ba39d1e8adda13299201f32ed",
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"lessThan": "4d992e63f52d58f52b724606c60ae7b37a1c582f",
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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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"sound/soc/amd/acp/acp-sdw-sof-mach.c"
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],
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"versions": [
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{
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"version": "6.12",
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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": "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": "6.12.97",
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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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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "6.12.97"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12",
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"versionEndExcluding": "7.1.5"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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}
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/0a5ff4000dd7a390139dd7823fef1de4963e490a"
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},
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{
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"url": "https://git.kernel.org/stable/c/9e82497138abea7d5c6e65015663d907fbcbf6b4"
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},
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{
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"url": "https://git.kernel.org/stable/c/86a64c049873fe4d4a6a378e27a333ab5631c4b2"
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},
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{
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"url": "https://git.kernel.org/stable/c/4d992e63f52d58f52b724606c60ae7b37a1c582f"
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}
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],
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"title": "ASoC: amd: acp-sdw-sof: Bound DAI link iteration",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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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-2026-74332",
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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": "2026-10-16T18:53:43.086858Z"
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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": "2026-10-16T18:55:33.526Z"
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}
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}
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}
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} |