310 lines
15 KiB
JSON
310 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-2026-43060",
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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": "2026-05-01T14:12:55.981Z",
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"datePublished": "2026-05-05T15:17:26.393Z",
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"dateUpdated": "2026-10-19T19:06:11.915Z"
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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": "2026-08-05T12:25:39.251Z"
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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\nnetfilter: nft_ct: drop pending enqueued packets on removal\n\nPackets sitting in nfqueue might hold a reference to:\n\n- templates that specify the conntrack zone, because a percpu area is\n used and module removal is possible.\n- conntrack timeout policies and helper, where object removal leave\n a stale reference.\n\nSince these objects can just go away, drop enqueued packets to avoid\nstale reference to them.\n\nIf there is a need for finer grain removal, this logic can be revisited\nto make selective packet drop upon dependencies."
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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: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 path is reached through local NETLINK_NETFILTER/nftables and NFQUEUE configuration plus verdict reinjection, not directly by unauthenticated network packets.\nAC:L - The attacker can deterministically create the nft ct timeout/helper/zone rule, queue packets, remove the referenced object, and reinject the queued packet; no uncontrollable race is required.\nPR:L - nfnetlink requires CAP_NET_ADMIN over the target network namespace, and nftables/netfilter administration is reachable by an unprivileged user via user and network namespaces where enabled.\nUI:N - Exploitation does not require victim interaction after the attacker has local execution; the attacker drives the netlink operations, packet queueing, object removal, and verdicts.\nS:U - The stale reference corrupts or dereferences kernel/netfilter objects within the same kernel security authority; this is a standard local kernel privilege escalation scope.\nC:H - This is a use-after-free/stale-reference condition involving freed nft ct timeout/helper/template objects retained by queued packets, which can be leveraged for kernel memory disclosure.\nI:H - Use-after-free of kernel heap objects and stale helper/function-bearing references can be shaped with heap reuse to gain write/control-flow primitives, so high integrity impact is defensible.\nA:H - At minimum, reinjecting queued packets after object removal can dereference freed kernel memory and crash or oops the kernel."
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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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"net/netfilter/nft_ct.c"
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],
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"versions": [
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{
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"version": "7e0b2b57f01d183e1c84114f1f2287737358d748",
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"lessThan": "8a64e76933672b08bd85b63086f33432070fd729",
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"status": "affected",
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},
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"lessThan": "3da0b946835f33bf36b459ead764c61a761e689b",
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"status": "affected",
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},
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"status": "affected",
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"lessThan": "e68a8db3a0546482b34e9ca5ca886bcf73eb37bb",
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"status": "affected",
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"lessThan": "f29a055e4f593e577805b41228b142b58f48df1b",
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"status": "affected",
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"versionType": "git"
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{
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"version": "7e0b2b57f01d183e1c84114f1f2287737358d748",
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"lessThan": "77da55dee67720e2b8d2db49a53334e6c017ee7b",
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"status": "affected",
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{
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"version": "7e0b2b57f01d183e1c84114f1f2287737358d748",
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"lessThan": "36eae0956f659e48d5366d9b083d9417f3263ddc",
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"status": "affected",
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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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"net/netfilter/nft_ct.c"
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],
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"versions": [
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{
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"version": "4.19",
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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": "4.19",
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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": "5.10.253",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.203",
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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": "6.1.167",
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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": "6.6.130",
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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": "6.12.78",
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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": "6.18.20",
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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": "6.19.10",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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": "4.19",
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"versionEndExcluding": "5.10.253"
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"references": [
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"url": "https://git.kernel.org/stable/c/3da0b946835f33bf36b459ead764c61a761e689b"
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"url": "https://git.kernel.org/stable/c/ab50302190b303f847c4eba0e31a01a56dec596e"
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"url": "https://git.kernel.org/stable/c/e68a8db3a0546482b34e9ca5ca886bcf73eb37bb"
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"url": "https://git.kernel.org/stable/c/6802ff8beceb9c4254318e81c1395720438f2cc2"
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},
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{
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"url": "https://git.kernel.org/stable/c/f29a055e4f593e577805b41228b142b58f48df1b"
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{
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"url": "https://git.kernel.org/stable/c/77da55dee67720e2b8d2db49a53334e6c017ee7b"
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{
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"url": "https://git.kernel.org/stable/c/36eae0956f659e48d5366d9b083d9417f3263ddc"
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}
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],
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"title": "netfilter: nft_ct: drop pending enqueued packets on removal",
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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-2026-43060",
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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": "2026-10-16T15:14:09.661568Z"
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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-416",
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"description": "CWE-416 Use After Free"
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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": "2026-10-19T19:06:11.915Z"
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]
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}
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} |