279 lines
15 KiB
JSON
279 lines
15 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-2025-38412",
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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": "2025-04-16T04:51:24.013Z",
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"datePublished": "2025-07-25T13:20:16.688Z",
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"dateUpdated": "2026-10-15T21:52:15.661Z"
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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": "2026-08-05T12:01:41.721Z"
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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\nplatform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks\n\nAfter retrieving WMI data blocks in sysfs callbacks, check for the\nvalidity of them before dereferencing their content."
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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:H",
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"baseScore": 7.8,
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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 vulnerability is reached only through a sysfs file read on the local machine (`/sys/class/firmware-attributes/dell-wmi-sysman/...`), which requires local access to the system. There is no network, adjacent-network, or physical-only path to `is_enabled_show()`/`current_value_show()`.\nAC:L - On an affected Dell/Alienware system whose firmware returns a non-package or short WMI data block, a single `cat` of the sysfs file deterministically and repeatably hits the unvalidated dereference — no race to win, no memory-layout grooming, and no state the attacker must wait for. The attack can be repeated arbitrarily to re-trigger the fault or harvest additional leaked bytes.\nPR:L - `passobj-attributes.c` exposes `is_enabled` via `__ATTR_RO()`, i.e. mode 0444, so any unprivileged local user can read it and drive `is_enabled_show()` into the unchecked `obj->package.elements[IS_PASS_SET]` dereference; only a basic user account is needed, not root.\nUI:N - The attacker performs the triggering read themselves via an ordinary open()/read() on the world-readable sysfs attribute. No victim action, no privileged helper, and no administrator interaction is required.\nS:U - The out-of-bounds read, wild-pointer dereference, and any resulting crash all occur inside the kernel of the same system, managed by the same security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The type confusion turns a firmware-supplied 64-bit value (or a string/buffer data pointer) into the `elements` array base, yielding an out-of-bounds — effectively arbitrary-address — kernel read whose result is then formatted with `snprintf(\"%s\"/\"%lld\")` straight into the sysfs buffer returned to userspace. Because the vulnerable `is_enabled` attribute is world-readable, an unprivileged user obtains a repeatable kernel memory disclosure primitive.\nI:H - This is a genuine type confusion — a `union acpi_object` of type Integer/String/Buffer is interpreted as a Package, so an attacker-influencable firmware value is consumed as a kernel pointer and indexed. Per the type-confusion classification, and given that a firmware-controlled pointer dereference in a driver that also performs BIOS attribute and password-object operations undermines the integrity of the kernel's view of that data, this is scored High.\nA:H - Dereferencing the confused `elements` pointer (an arbitrary firmware integer, or an out-of-bounds address past a buffer/short package) reliably produces an unhandled page fault and kernel oops/panic, and the subsequent `%s` dereference of an out-of-bounds `string.pointer` compounds this. Any local user can trigger it on demand by reading the 0444 `is_enabled` file, making it a repeatable full 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/platform/x86/dell/dell-wmi-sysman/dell-wmi-sysman.h",
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"drivers/platform/x86/dell/dell-wmi-sysman/enum-attributes.c",
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"drivers/platform/x86/dell/dell-wmi-sysman/int-attributes.c",
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"drivers/platform/x86/dell/dell-wmi-sysman/passobj-attributes.c",
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"drivers/platform/x86/dell/dell-wmi-sysman/string-attributes.c",
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"drivers/platform/x86/dell/dell-wmi-sysman/sysman.c"
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],
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"versions": [
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{
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"version": "e8a60aa7404bfef37705da5607c97737073ac38d",
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"lessThan": "92c2d914b5337431d885597a79a3a3d9d55e80b7",
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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": "e8a60aa7404bfef37705da5607c97737073ac38d",
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"lessThan": "68e9963583d11963ceca5d276e9c44684509f759",
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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": "e8a60aa7404bfef37705da5607c97737073ac38d",
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"lessThan": "0deb3eb78ebf225cb41aa9b2b2150f46cbfd359e",
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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": "e8a60aa7404bfef37705da5607c97737073ac38d",
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"lessThan": "5df3b870bc389a1767c72448a3ce1c576ef4deab",
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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": "e8a60aa7404bfef37705da5607c97737073ac38d",
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"lessThan": "aaf847dcb4114fe8b25d4c1c790bedcb6088cb3d",
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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": "e8a60aa7404bfef37705da5607c97737073ac38d",
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"lessThan": "eb617dd25ca176f3fee24f873f0fd60010773d67",
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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/platform/x86/dell/dell-wmi-sysman/dell-wmi-sysman.h",
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"drivers/platform/x86/dell/dell-wmi-sysman/enum-attributes.c",
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"drivers/platform/x86/dell/dell-wmi-sysman/int-attributes.c",
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"drivers/platform/x86/dell/dell-wmi-sysman/passobj-attributes.c",
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"drivers/platform/x86/dell/dell-wmi-sysman/string-attributes.c",
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"drivers/platform/x86/dell/dell-wmi-sysman/sysman.c"
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],
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"versions": [
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{
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"version": "5.11",
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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": "5.11",
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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": "5.15.187",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.144",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.97",
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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": "6.12.37",
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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": "6.15.6",
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"lessThanOrEqual": "6.15.*",
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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": "6.16",
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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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"versionStartIncluding": "5.11",
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"versionEndExcluding": "5.15.187"
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{
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"url": "https://git.kernel.org/stable/c/eb617dd25ca176f3fee24f873f0fd60010773d67"
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}
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],
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"title": "platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks",
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"x_generator": {
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"engine": "bippy-1.2.0"
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"adp": [
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
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],
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"dateUpdated": "2025-11-03T17:37:44.050Z"
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}
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},
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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-2025-38412",
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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": "2026-10-15T21:50:12.754501Z"
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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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"dateUpdated": "2026-10-15T21:52:15.661Z"
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} |