215 lines
11 KiB
JSON
215 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-2026-72143",
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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": "2026-08-09T03:40:39.908Z",
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"datePublished": "2026-08-15T05:53:16.241Z",
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"dateUpdated": "2026-10-16T18:44:58.966Z"
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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": "2026-08-17T05:40:51.234Z"
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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\nplatform/x86: ISST: Restore SST-PP control to all domains\n\nThe SST-PP control offset is only restored to power domain 0 after\nresume. During suspend, control values are read and stored for all\npower domains.\n\nUse pd_info->sst_base instead of power_domain_info->sst_base, which\nonly points to power domain 0 base address."
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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:L/UI:N/S:U/C:N/I:H/A:H",
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"baseScore": 7.1,
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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 flawed writeq runs only in the ISST TPMI driver PM resume callback (intel_sst_resume -> tpmi_sst_dev_resume) after a local suspend-to-RAM cycle, not from any network packet handler or remote service.\nAC:L - Once a multi-domain SST-TPMI system completes S3 suspend, resume deterministically executes the wrong MMIO restore for every power domain above zero with no races or attacker-dependent timing.\nPR:L - Reaching the buggy resume handler requires only initiating a system suspend (e.g., writing mem to /sys/power/state, which lacks a CAP_SYS_ADMIN check, or polkit-permitted local suspend); user namespaces cannot grant ISST ioctl writes but can still allow this PM path.\nUI:N - Exploitation does not require a victim to open files, mount filesystems, or take any other interactive action beyond the attacker (or system policy) triggering suspend and automatic resume.\nS:U - Impact is confined to corrupting SST-PP hardware configuration and host stability on the same machine; it does not cross a VM, container, or IOMMU security boundary to another authority.\nC:N - The bug performs MMIO writeq operations to hardware registers only; it does not read kernel memory, leak pointers, or expose data to userspace.\nI:H - Each incorrect resume writes a full 64-bit SST-PP control value to the wrong hardware MMIO address, corrupting platform power/performance configuration; values can be attacker-influenced via prior CAP_SYS_ADMIN ISST perf-level changes before suspend.\nA:H - Misdirected MMIO writes can panic or hang the host, and unrestored or corrupted SST-PP settings on additional power domains can destabilize multi-die Xeon systems after every affected resume cycle."
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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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"drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c"
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],
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"versions": [
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{
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"version": "e3704ce5d7156ee837461be99841f312c64700b0",
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"lessThan": "cea03d67db3a880893360bdbb1b0b8d9b33b1799",
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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": "dc7901b5a1563a9c9eb29b3b0b0dac3162065cd8",
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"lessThan": "2a42f651cce91e9cbe65fe933622c522cbb1868b",
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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": "dc7901b5a1563a9c9eb29b3b0b0dac3162065cd8",
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"lessThan": "2565a28cdcdcb035e151d285efcba26bccb3726e",
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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": "2624f3bf45a830cb3b8c8b967b23a72139700562",
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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": "6.18.16",
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"lessThan": "6.18.40",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.19.6",
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"lessThan": "6.20",
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"status": "affected",
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"versionType": "semver"
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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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"drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c"
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],
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"versions": [
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{
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"version": "7.0",
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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": "7.0",
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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": "6.18.16",
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"versionEndExcluding": "6.18.40"
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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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"versionStartIncluding": "7.0",
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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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"versionStartIncluding": "7.0",
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"versionEndExcluding": "7.2"
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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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"versionStartIncluding": "6.19.6"
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}
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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/cea03d67db3a880893360bdbb1b0b8d9b33b1799"
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},
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{
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"url": "https://git.kernel.org/stable/c/2a42f651cce91e9cbe65fe933622c522cbb1868b"
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},
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{
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"url": "https://git.kernel.org/stable/c/2565a28cdcdcb035e151d285efcba26bccb3726e"
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}
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],
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"title": "platform/x86: ISST: Restore SST-PP control to all domains",
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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-2026-72143",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T18:42:49.460532Z"
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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": "2026-10-16T18:44:58.966Z"
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}
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}
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]
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}
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} |