277 lines
14 KiB
JSON
277 lines
14 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-2026-74281",
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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": "2026-08-15T05:44:03.880Z",
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"datePublished": "2026-08-15T05:57:51.423Z",
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"dateUpdated": "2026-10-16T18:55:29.746Z"
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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": "2026-08-17T05:45:22.291Z"
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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\ntipc: reject inverted service ranges from peer bindings\n\ntipc_update_nametbl() inserts a binding advertised by a peer node using\nthe lower and upper service-range bounds taken directly from the wire,\nwithout checking that lower <= upper. The local bind path validates the\nordering (tipc_uaddr_valid()), but the name-distribution path does not.\n\nA binding with lower > upper is inserted at the far end of the\nservice-range rbtree (keyed on lower) where no lookup or withdrawal can\never match it (service_range_foreach_match() requires sr->lower <= end).\nThe publication, its service_range node and the augmented rbtree entry\nare then leaked for the lifetime of the namespace, and there is no\nper-peer cap equivalent to TIPC_MAX_PUBL on locally created bindings.\n\nReject inverted ranges in the network path as well. A peer node can\notherwise leak unbounded binding-table memory by sending PUBLICATION\nitems with lower > upper."
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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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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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:N - NAME_DISTRIBUTOR PUBLICATION messages from a remote TIPC peer are processed via tipc_rcv/tipc_link_rcv into tipc_named_rcv with no local syscall, matching Network attack vector for in-kernel protocol handlers.\nAC:L - Sending PUBLICATION items with lower>upper reliably triggers permanent leaked binding-table entries; attacker controls both ends of the exchange over an established link with no race or victim-dependent timing.\nPR:N - A malicious or compromised cluster peer can send crafted name-table updates without any account or capability on the victim; TIPC accepts peer publications after normal link setup without per-message authentication by default.\nUI:N - Victim nodes ingest peer binding advertisements automatically during TIPC name distribution; no administrator or user action is required beyond routine cluster connectivity.\nS:U - The flaw only causes unreachable kernel heap growth in the victim's network namespace and does not cross VM, container, or IOMMU security boundaries.\nC:N - The issue is allocation without corresponding free of publication/service_range objects; it does not read or disclose kernel or user data beyond attacker-chosen binding fields.\nI:N - Inverted ranges create orphaned nametable metadata without corrupting adjacent memory or modifying legitimate bindings, sockets, or user data.\nA:H - Each unique inverted publication permanently leaks publication, service_range, and rbtree nodes with no per-peer cap and failed cleanup on peer loss/withdrawal, enabling repeatable remote kernel memory exhaustion and OOM."
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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/tipc/name_distr.c"
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],
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"versions": [
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{
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"version": "37922ea4a3105176357c8d565a9d982c4a08714a",
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"lessThan": "cd1955f81bd8ebeef51b324989ac871ad1947fb6",
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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": "37922ea4a3105176357c8d565a9d982c4a08714a",
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"status": "affected",
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},
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"lessThan": "f1715d92ee3095d9215b493a8603a81f646fcf61",
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"status": "affected",
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"versionType": "git"
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},
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"lessThan": "581ef56e5c34d475056ce086dc2ba0e872ba6857",
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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": "37922ea4a3105176357c8d565a9d982c4a08714a",
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"lessThan": "7e401233f9bb74a626e70698d0d62f3a94ac0676",
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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": "37922ea4a3105176357c8d565a9d982c4a08714a",
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"lessThan": "973bf0ed896b9898668dbadb82ed849d7d573010",
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"status": "affected",
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{
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"lessThan": "2afb648f7b99216c687db1f89739c995e1144153",
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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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"net/tipc/name_distr.c"
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],
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"versions": [
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{
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"version": "4.17",
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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": "4.17",
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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": "6.12.97",
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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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"cpeApplicability": [
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/cd1955f81bd8ebeef51b324989ac871ad1947fb6"
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"url": "https://git.kernel.org/stable/c/f683200b83a0085d4e11abea8c1fdd9fdfb95b0b"
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"url": "https://git.kernel.org/stable/c/581ef56e5c34d475056ce086dc2ba0e872ba6857"
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"url": "https://git.kernel.org/stable/c/7e401233f9bb74a626e70698d0d62f3a94ac0676"
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{
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"url": "https://git.kernel.org/stable/c/973bf0ed896b9898668dbadb82ed849d7d573010"
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{
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"url": "https://git.kernel.org/stable/c/2afb648f7b99216c687db1f89739c995e1144153"
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}
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],
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"title": "tipc: reject inverted service ranges from peer bindings",
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"x_generator": {
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"engine": "bippy-1.2.0"
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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-2026-74281",
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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": "yes"
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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": "2026-10-16T18:52:04.430800Z"
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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": "2026-10-16T18:55:29.746Z"
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}
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}
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]
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}
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} |