312 lines
17 KiB
JSON
312 lines
17 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-2026-72049",
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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": "2026-08-09T03:40:39.902Z",
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"datePublished": "2026-08-15T05:52:06.989Z",
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"dateUpdated": "2026-10-19T21:19:24.612Z"
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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": "2026-08-17T05:39:46.666Z"
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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\nieee802154: admin-gate legacy LLSEC dump operations\n\nIn net/ieee802154/netlink.c, the legacy IEEE802154_NL family ops table\nbuilds the LLSEC dump entries (LLSEC_LIST_KEY, LLSEC_LIST_DEV,\nLLSEC_LIST_DEVKEY, LLSEC_LIST_SECLEVEL) with IEEE802154_DUMP() which\nsets no .flags, so generic netlink runs them ungated. The modern\nnl802154 family admin-gates the equivalent reads via\nNL802154_CMD_GET_SEC_KEY and friends with .flags = GENL_ADMIN_PERM.\n\nAny local uid that can open AF_NETLINK / NETLINK_GENERIC can resolve\nthe \"802.15.4 MAC\" family and dump LLSEC_LIST_KEY on any wpan netdev\nthat has an LLSEC key installed; the dump handler writes the raw\n16-byte AES-128 key bytes (IEEE802154_ATTR_LLSEC_KEY_BYTES, copied\nverbatim from struct ieee802154_llsec_key.key) into the reply.\nRecovering the AES key compromises 802.15.4 LLSEC link confidentiality\nand authenticity, since LLSEC uses CCM* and the same key authenticates\nand encrypts frames.\n\nImpact: any local uid with no capabilities can read the raw 16-byte\nAES-128 LLSEC key from the kernel keytable on any wpan netdev that has\nan administrator-installed LLSEC key, by issuing an LLSEC_LIST_KEY\ndump on the legacy IEEE802154_NL generic-netlink family.\n\nIntroduce IEEE802154_DUMP_PRIV() mirroring IEEE802154_DUMP() but\nsetting .flags = GENL_ADMIN_PERM, and use it for the four LLSEC dump\nentries. LIST_PHY and LIST_IFACE retain IEEE802154_DUMP() because the\nmodern nl802154 family exposes their equivalents to unprivileged\nreaders by design (NL802154_CMD_GET_WPAN_PHY and\nNL802154_CMD_GET_INTERFACE carry \"can be retrieved by unprivileged\nusers\" annotations)."
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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:N",
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"baseScore": 7.1,
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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 - Exploitation requires a local syscall path: open AF_NETLINK/NETLINK_GENERIC, resolve the \"802.15.4 MAC\" genl family, and send an NLM_F_DUMP for IEEE802154_LLSEC_LIST_KEY; the bug is in kernel netlink configuration code, not in remote 802.15.4 frame handling.\nAC:L - Once IEEE802154/LLSEC is enabled and keys are installed on a wpan netdev (typical on Zigbee/6LoWPAN gateways and industrial IoT coordinators), an attacker can deterministically trigger the dump and receive key material without races or special memory layout.\nPR:L - The vulnerable dump ops lack GENL_ADMIN_PERM, so netlink_capable(CAP_NET_ADMIN) is never enforced; any basic local UID with permission to create generic-netlink sockets (no capabilities) can read administrator-installed LLSEC keys.\nUI:N - No victim interaction is required beyond the attacker already having local execution access; exploitation is a direct netlink dump request with no user clicks, mounts, or device pairing steps.\nS:U - Impact stays within the host kernel/network stack security boundary (disclosure of kernel-held LLSEC credentials); it does not cross VM, container, or IOMMU isolation boundaries.\nC:H - The dump handler returns full raw 16-byte AES-128 LLSEC key bytes (IEEE802154_ATTR_LLSEC_KEY_BYTES) for every installed key, enabling decryption of all CCM*-protected 802.15.4 traffic protected by those keys.\nI:H - Disclosed AES-128 LLSEC keys are used for both encryption and authentication (CCM*); possession enables forging cryptographically valid LLSEC frames and impersonating trusted WPAN devices on Zigbee/6LoWPAN/industrial sensor networks.\nA:N - The bug is a read-only information disclosure via netlink attribute copying; it does not corrupt memory, panic the kernel, or cause hangs or 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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"net/ieee802154/ieee802154.h",
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"net/ieee802154/netlink.c"
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],
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"versions": [
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"lessThan": "1905ebabe638c946aced00c4bb664da26cac56d5",
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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/ieee802154/ieee802154.h",
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"net/ieee802154/netlink.c"
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],
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"versions": [
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{
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"version": "3.16",
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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": "3.16",
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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": "5.10.261",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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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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},
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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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},
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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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},
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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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},
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{
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},
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{
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"url": "https://git.kernel.org/stable/c/5abe94a205539d27945cda3ba43fdcfe295cf2c8"
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},
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{
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"url": "https://git.kernel.org/stable/c/09fd25cd8cd80a6b3edef04e53a7324d06ac2180"
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},
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{
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"url": "https://git.kernel.org/stable/c/6383248058956f2a52d720b1e9f8921099cdae04"
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{
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"url": "https://git.kernel.org/stable/c/9c1e0b6d49471a712511d23fc9d06901561135e8"
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}
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],
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"title": "ieee802154: admin-gate legacy LLSEC dump operations",
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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-2026-72049",
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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": "2026-10-16T15:50:41.118128Z"
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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-862",
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"description": "CWE-862 Missing Authorization"
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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": "2026-10-19T21:19:24.612Z"
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}
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}
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]
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}
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} |