205 lines
10 KiB
JSON
205 lines
10 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-2026-64255",
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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": "2026-07-19T15:36:31.773Z",
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"datePublished": "2026-07-24T15:31:22.870Z",
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"dateUpdated": "2026-10-19T20:28:16.644Z"
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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": "2026-08-17T04:52:07.539Z"
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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\nwifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers\n\nThree BA session handlers use ffs(ba_data->sta_mask) - 1 to derive a\nstation ID without checking that sta_mask is non-zero. When sta_mask is\nzero, ffs() returns 0 and the subtraction wraps to 0xFFFFFFFF, causing\nan out-of-bounds access on fw_id_to_link_sta[].\n\nAdd WARN_ON_ONCE(!ba_data->sta_mask) guards before each ffs() call,\nconsistent with the existing check in iwl_mld_ampdu_rx_start()."
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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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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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:A - The vulnerable BA-session handlers are driven by Wi-Fi aggregation, BAR/DELBA traffic, firmware notifications, and timers influenced by a radio peer, requiring Wi-Fi adjacency.\nAC:L - A malicious associated MLO peer can control ADDBA parameters, link-state transitions, aggregation traffic, DELBA delivery, and inactivity timing, allowing the sequence to be triggered repeatedly without an uncontrollable race.\nPR:N - The peer must have an existing mac80211 station relationship, but needs no host account, kernel capability, or administrative privilege; a malicious AP or associated station satisfies this gate.\nUI:N - Once the wireless relationship exists, the peer can trigger the vulnerable sequence entirely through protocol traffic without further victim action.\nS:U - The vulnerable driver and affected kernel memory belong to the same host security authority, with no VM, IOMMU, or other scope boundary crossed.\nC:H - The 0xFFFFFFFF index reads a pointer far outside the 16-entry array and then follows it through additional pointer dereferences, permitting disclosure of arbitrary kernel memory under a groomed layout.\nI:H - A bogus station pointer can reach the PN and mac80211 receive paths, where attacker-controlled PN bytes and station state are written through pointer-derived addresses, potentially enabling kernel memory corruption and control-flow hijacking.\nA:H - The invalid array access or subsequent pointer dereference can fault in NAPI, RX-queue, or timer context, causing a kernel oops or panic and complete system denial of service."
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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/net/wireless/intel/iwlwifi/mld/agg.c"
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],
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"versions": [
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{
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"version": "9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b",
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"lessThan": "1de92789ce31e46fa7e7d8e89c90b19cdb1c103b",
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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": "9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b",
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"lessThan": "fe7f339f63c9dc4ca546ed7ac38ba4bb3a99dcfc",
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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": "9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b",
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"lessThan": "f056fc2b927448d37eca6b6cacc3d1b0f67b20d2",
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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/net/wireless/intel/iwlwifi/mld/agg.c"
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],
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"versions": [
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{
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"version": "6.4",
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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": "6.4",
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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": "6.18.38",
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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": "7.1.3",
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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": "6.4",
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"versionEndExcluding": "6.18.38"
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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": "6.4",
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"versionEndExcluding": "7.1.3"
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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": "6.4",
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"versionEndExcluding": "7.2"
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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/1de92789ce31e46fa7e7d8e89c90b19cdb1c103b"
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},
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{
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"url": "https://git.kernel.org/stable/c/fe7f339f63c9dc4ca546ed7ac38ba4bb3a99dcfc"
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},
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{
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"url": "https://git.kernel.org/stable/c/f056fc2b927448d37eca6b6cacc3d1b0f67b20d2"
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}
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],
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"title": "wifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers",
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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-2026-64255",
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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": "2026-10-16T15:37:57.745113Z"
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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-125",
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"description": "CWE-125 Out-of-bounds Read"
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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": "2026-10-19T20:28:16.644Z"
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}
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}
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]
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}
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} |