216 lines
11 KiB
JSON
216 lines
11 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-2026-72497",
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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": "2026-08-09T03:40:39.937Z",
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"datePublished": "2026-08-15T05:57:30.386Z",
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"dateUpdated": "2026-10-21T12:45:05.370Z"
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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": "2026-10-21T12:45:05.370Z"
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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\nRDMA/bnxt_re: Add a max slot check for SQ\n\nThe variable WQE mode must be validated against\nthe maximum slots supported by HW. The max supported\nvalue is 64K. Adding a max and min check and fail if user\nsupplied value is more than the max supported and zero."
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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:C/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:L - The flaw is reached only via local RDMA uverbs ioctl/write on /dev/infiniband/uverbs* (IB_USER_VERBS_CMD_CREATE_QP → bnxt_re_create_qp → bnxt_re_init_qp_attr); remote RoCE peers cannot supply the bnxt_re_qp_req.sq_slots field.\nAC:L - On bnxt_re hardware with variable WQE enabled, an attacker deterministically sets sq_slots to 0 or any value above 65536 in create_qp driver udata; no race, timing window, or uncontrollable memory layout is required beyond opening uverbs and issuing the ioctl.\nPR:L - Exploitation requires only local access to the world-accessible (mode 0666) uverbs character device to alloc a VAR_WQE ucontext and create a QP; no CAP_SYS_ADMIN, init-namespace root, or other elevated capability is needed on typical HPC/cloud RDMA hosts.\nUI:N - The attacker triggers the bug entirely through their own alloc_context/create_qp sequence with crafted sq_slots; no cooperative action by another user, administrator, or victim is required.\nS:C - On Kubernetes/HPC hosts that expose bnxt_re to unprivileged RDMA workloads or containers, corrupting host-kernel memory or NIC DMA state from a tenant create_qp escapes the workload security boundary to the hypervisor/host authority.\nC:H - Unvalidated sq_slots drives integer overflow in SQ/PSN byte sizing and can register undersized ib_umem while programming firmware with a far larger sq_size, enabling out-of-bounds DMA reads and kernel memory disclosure beyond the mapped queue buffer.\nI:H - Oversized sq_slots values program hardware queue depth beyond the registered user buffer and corrupt queue/PSN metadata sizing, yielding out-of-bounds writes and exploitable memory corruption rather than a benign error return.\nA:H - Invalid zero or >64K slot counts can kernel-oops during QP setup (e.g., inconsistent HWQ/PSN allocation) and misprogrammed queue depths can panic or hang the host when the adapter accesses nonexistent queue memory."
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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/infiniband/hw/bnxt_re/ib_verbs.c",
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"drivers/infiniband/hw/bnxt_re/qplib_sp.h"
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],
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"versions": [
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{
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"version": "d8ea645d6984c84a87032063a0941f15a323831f",
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"lessThan": "d4d1c78b56b6abc0dcb6015faaed2cf4d0f2797b",
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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": "d8ea645d6984c84a87032063a0941f15a323831f",
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"lessThan": "2106c337905d7445d75818e36920b63f9211c584",
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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": "d8ea645d6984c84a87032063a0941f15a323831f",
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"lessThan": "a59d815cbe667929b693b5fa6716a074e6a31c5b",
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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": "d8ea645d6984c84a87032063a0941f15a323831f",
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"lessThan": "dc95931b7e1326dacae547874bf38c092e5960d8",
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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/infiniband/hw/bnxt_re/ib_verbs.c",
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"drivers/infiniband/hw/bnxt_re/qplib_sp.h"
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],
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"versions": [
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{
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"version": "6.12",
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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": "6.12",
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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": "6.12.114",
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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": "6.18.57",
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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": "6.12",
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"versionEndExcluding": "6.12.114"
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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": "6.12",
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"versionEndExcluding": "6.18.57"
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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": "6.12",
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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": "6.12",
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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/d4d1c78b56b6abc0dcb6015faaed2cf4d0f2797b"
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},
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{
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"url": "https://git.kernel.org/stable/c/2106c337905d7445d75818e36920b63f9211c584"
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},
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{
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"url": "https://git.kernel.org/stable/c/a59d815cbe667929b693b5fa6716a074e6a31c5b"
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},
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{
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"url": "https://git.kernel.org/stable/c/dc95931b7e1326dacae547874bf38c092e5960d8"
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}
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],
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"title": "RDMA/bnxt_re: Add a max slot check for SQ",
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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-2026-72497",
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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": "2026-10-16T18:51:09.318750Z"
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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": "2026-10-16T18:55:27.288Z"
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}
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}
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]
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}
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} |