193 lines
10 KiB
JSON
193 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-2026-74409",
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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": "2026-08-15T05:44:03.892Z",
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"datePublished": "2026-08-15T05:59:17.361Z",
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"dateUpdated": "2026-10-16T19:05:43.801Z"
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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": "2026-08-17T05:46:52.696Z"
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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: rtw89: add bounds check on firmware mac_id in link lookup\n\nThe mac_id field in RX descriptors is 8 bits wide (0-255), but\nassoc_link_on_macid[] has only RTW89_MAX_MAC_ID_NUM (128) entries.\nWhile the driver currently assigns mac_id values below 128, the\ndescriptor value comes from firmware and is not validated before use\nas an array index. Add a defensive bounds check in\nrtw89_assoc_link_rcu_dereference() to guard against out-of-range\nfirmware values."
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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 bug is reached when rtw89 processes WiFi RX descriptors or firmware C2H events whose mac_id is taken from device firmware after over-the-air frame reception; per kernel CNA guidance, WiFi driver bugs exploitable via injected/received 802.11 frames are Adjacent, not local or physical.\nAC:L - An adjacent attacker can repeatedly send 802.11 frames (client or softAP role) to drive normal PCI/USB RX and firmware notification paths; no rare victim state, secret, or uncontrollable memory layout is required beyond having WiFi active on an affected rtw89 device.\nPR:N - Exploitation requires only radio-range WiFi access to a victim using the rtw89 driver; the attacker needs no local shell account, kernel capability, or init-namespace root on the target system.\nUI:N - No victim interaction is required at exploitation time; once the interface is operating, malicious over-the-air traffic alone can populate firmware RX/C2H metadata with an out-of-range mac_id and hit the vulnerable lookup.\nS:U - Impact is confined to kernel/driver memory corruption and crashes on the host running rtw89; it does not cross a VM, container, or IOMMU security boundary into another authority.\nC:H - Using an unvalidated firmware mac_id (up to 255, or wider in C2H) as an index performs an out-of-bounds read of assoc_link_on_macid[], interpreting adjacent rtw89_dev fields as a station pointer and enabling further unintended kernel memory reads.\nI:H - The out-of-bounds pointer is dereferenced and used for writes and callbacks (e.g., tid_rx_stats updates, PS flag changes, ieee80211_sta_ps_transition/uapsd), giving memory corruption primitives that could be developed into arbitrary kernel write or code execution.\nA:H - Dereferencing attacker-influenced out-of-bounds pointers from assoc_link_on_macid[] can immediately trigger kernel oops/panic or hang during RX processing on production WiFi clients, softAPs, and hotspots using affected Realtek rtw89 hardware."
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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/realtek/rtw89/core.h"
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],
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"versions": [
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{
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"version": "144c6cd24b3556e6e7a14271cee57a42ebf97450",
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"lessThan": "ad445de67359f24088d4305c05fbd7e34c4e35e3",
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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": "144c6cd24b3556e6e7a14271cee57a42ebf97450",
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"lessThan": "920101305e7601a33b9e01019f4ca526af2526ae",
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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": "144c6cd24b3556e6e7a14271cee57a42ebf97450",
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"lessThan": "6d88244bb129755acca696f9227200f4a2d106a6",
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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/realtek/rtw89/core.h"
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],
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"versions": [
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{
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"version": "6.14",
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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": "6.14",
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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": "6.14",
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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": "6.14",
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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": "6.14",
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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/ad445de67359f24088d4305c05fbd7e34c4e35e3"
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},
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{
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"url": "https://git.kernel.org/stable/c/920101305e7601a33b9e01019f4ca526af2526ae"
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},
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{
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"url": "https://git.kernel.org/stable/c/6d88244bb129755acca696f9227200f4a2d106a6"
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}
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],
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"title": "wifi: rtw89: add bounds check on firmware mac_id in link lookup",
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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-2026-74409",
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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": "2026-10-16T18:55:59.552190Z"
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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": "2026-10-16T19:05:43.801Z"
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}
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}
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]
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}
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} |