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-2026-72360",
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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": "2026-08-09T03:40:39.921Z",
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"datePublished": "2026-08-15T05:56:00.076Z",
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"dateUpdated": "2026-10-16T18:55:20.266Z"
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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": "2026-08-17T05:43:17.664Z"
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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\ndrm/xe/pf: Don't attempt to process FAST_REQ or EVENT relays\n\nCurrently defined VF/PF relay actions use regular REQUEST messages\nonly and the PF shouldn't attempt to handle FAST_REQUEST nor EVENT\nmessages as this would result in breaking the VFPF ABI protocol\nand also might trigger an assert on the PF side.\n\n(cherry picked from commit 1714d360fc5ae2e0886a69e979095d9c7ff3568a)"
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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:C/C:N/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 - A malicious VM guest with an assigned Intel Xe SR-IOV VF reaches the bug by sending crafted GuC relay messages through the local VF-to-PF driver path (guest kernel/driver to host PF via GuC), not over a remote network protocol.\nAC:L - Once assigned an Xe SR-IOV VF, a cloud GPU tenant can reliably inject FAST_REQUEST or EVENT relay messages (e.g., via a modified guest driver) and control both sides of the transaction without uncontrollable timing or memory-layout races.\nPR:L - Exploitation requires tenant-level access to a VM with a passthrough Xe SR-IOV VF (typically root or a custom guest kernel/driver to craft non-REQUEST relay types) but does not require host administrator privileges on the PF.\nUI:N - No separate victim action is required; the attacker triggers the flaw directly by sending malformed FAST_REQUEST or EVENT relay messages from their own guest environment.\nS:C - A malicious VF guest causes the host PF kernel driver to mishandle GuC relay messages, crossing the VM/hypervisor security boundary in SR-IOV GPU virtualization (guest-to-host impact on the PF).\nC:N - No memory corruption or out-of-band read occurs; VF2PF handshake and runtime-query handlers return the same bounded register data as legitimate REQUEST messages, with no additional confidentiality impact.\nI:H - FAST_REQUEST and EVENT messages are type-confused with REQUEST and routed to xe_gt_sriov_pf_service_process_request(), causing the PF to emit protocol-invalid responses that corrupt host VF/PF relay and GuC communication state.\nA:H - Violating the VF/PF relay ABI by replying to EVENT/FAST_REQUEST messages can desynchronize host GuC relay handling and trigger PF asserts (drm_WARN on debug builds), risking host GPU driver failure or denial of service affecting all tenants on the device."
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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/gpu/drm/xe/xe_guc_relay.c"
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],
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"versions": [
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{
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"version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
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"lessThan": "499be4b5d64209e9f18c9442f9fbeef7155ae900",
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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": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
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"lessThan": "adc7dda728ca3e340a413e3bbc10cf159e1866a4",
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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": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
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"lessThan": "a4208d8032abd7f591581994f31e23b80b8fe659",
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"status": "affected",
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},
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{
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"version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
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"lessThan": "ed8b0d731892c68b41ecbd27c952af284816dec1",
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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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"drivers/gpu/drm/xe/xe_guc_relay.c"
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],
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"versions": [
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{
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"version": "6.11",
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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": "6.11",
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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": "6.11",
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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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{
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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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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/499be4b5d64209e9f18c9442f9fbeef7155ae900"
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},
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{
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"url": "https://git.kernel.org/stable/c/adc7dda728ca3e340a413e3bbc10cf159e1866a4"
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},
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{
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"url": "https://git.kernel.org/stable/c/a4208d8032abd7f591581994f31e23b80b8fe659"
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},
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{
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"url": "https://git.kernel.org/stable/c/ed8b0d731892c68b41ecbd27c952af284816dec1"
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}
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],
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"title": "drm/xe/pf: Don't attempt to process FAST_REQ or EVENT relays",
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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-2026-72360",
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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": "2026-10-16T18:47:59.667042Z"
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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": "2026-10-16T18:55:20.266Z"
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}
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}
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]
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}
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} |