226 lines
12 KiB
JSON
226 lines
12 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-2026-23136",
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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": "2026-01-13T15:37:45.971Z",
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"datePublished": "2026-02-14T15:22:21.952Z",
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"dateUpdated": "2026-10-19T18:25:32.994Z"
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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": "2026-08-05T12:20:20.637Z"
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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\nlibceph: reset sparse-read state in osd_fault()\n\nWhen a fault occurs, the connection is abandoned, reestablished, and any\npending operations are retried. The OSD client tracks the progress of a\nsparse-read reply using a separate state machine, largely independent of\nthe messenger's state.\n\nIf a connection is lost mid-payload or the sparse-read state machine\nreturns an error, the sparse-read state is not reset. The OSD client\nwill then interpret the beginning of a new reply as the continuation of\nthe old one. If this makes the sparse-read machinery enter a failure\nstate, it may never recover, producing loops like:\n\n libceph: [0] got 0 extents\n libceph: data len 142248331 != extent len 0\n libceph: osd0 (1)...:6801 socket error on read\n libceph: data len 142248331 != extent len 0\n libceph: osd0 (1)...:6801 socket error on read\n\nTherefore, reset the sparse-read state in osd_fault(), ensuring retries\nstart from a clean state."
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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 - The Ceph OSD client communicates with OSD servers over TCP. A network-level attacker who can disrupt the TCP connection (RST injection) or a malicious/compromised OSD server can trigger the fault during a sparse read operation remotely.\nAC:L - Sparse reads are a normal part of CephFS/RBD operation. An attacker who can disrupt TCP connections can repeatedly do so until one coincides with a sparse read. A malicious OSD server knows exactly when sparse reads are in progress and can reliably trigger the fault.\nPR:N - The attack requires disrupting the TCP connection between client and OSD, which does not require any Ceph authentication credentials. TCP RST injection or network-level connection disruption bypasses CephX authentication entirely.\nUI:N - No user interaction is required. The sparse read operations occur as part of normal CephFS/RBD I/O, and the connection fault is triggered by the attacker without any victim action.\nS:U - The impact is confined to the kernel's Ceph client losing access to the OSD. There is no cross-boundary impact such as VM escape or sandbox escape.\nC:N - The vulnerability causes a data parsing mismatch that is caught by validation checks, returning clean errors. No information disclosure occurs — the stale state causes misinterpretation of reply framing, not exposure of memory contents.\nI:N - No data modification or memory corruption occurs. The validation checks in the sparse read state machine detect the mismatch and return -EREMOTEIO before any data is written to incorrect locations.\nA:H - The OSD connection enters an infinite, unrecoverable error loop where every retry fails with the same stale state mismatch. All CephFS/RBD I/O to the affected OSD hangs or fails indefinitely, causing persistent 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/ceph/osd_client.c"
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],
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"versions": [
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{
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"version": "f628d799972799023d32c2542bb2639eb8c4f84e",
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"lessThan": "90a60fe61908afa0eaf7f8fcf1421b9b50e5f7ff",
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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": "f628d799972799023d32c2542bb2639eb8c4f84e",
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"lessThan": "e94075e950a6598e710b9f7dffea5aa388f40313",
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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": "f628d799972799023d32c2542bb2639eb8c4f84e",
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"lessThan": "10b7c72810364226f7b27916ea3e2a4f870bc04b",
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"status": "affected",
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{
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"lessThan": "11194b416ef95012c2cfe5f546d71af07b639e93",
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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/ceph/osd_client.c"
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],
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"versions": [
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{
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"version": "6.6",
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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": "6.6",
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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": "6.6.121",
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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": "6.12.66",
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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": "6.18.6",
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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",
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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": "6.6",
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"versionEndExcluding": "6.6.121"
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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": "6.6",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6",
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"versionEndExcluding": "6.18.6"
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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": "6.6",
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"versionEndExcluding": "6.19"
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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/90a60fe61908afa0eaf7f8fcf1421b9b50e5f7ff"
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},
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{
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"url": "https://git.kernel.org/stable/c/e94075e950a6598e710b9f7dffea5aa388f40313"
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},
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{
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"url": "https://git.kernel.org/stable/c/10b7c72810364226f7b27916ea3e2a4f870bc04b"
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},
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{
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"url": "https://git.kernel.org/stable/c/11194b416ef95012c2cfe5f546d71af07b639e93"
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}
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],
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"title": "libceph: reset sparse-read state in osd_fault()",
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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-2026-23136",
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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": "2026-10-16T15:06:32.045794Z"
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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-667",
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"description": "CWE-667 Improper Locking"
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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": "2026-10-19T18:25:32.994Z"
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}
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}
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]
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}
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} |