222 lines
11 KiB
JSON
222 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-2026-74486",
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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": "2026-08-15T05:44:03.905Z",
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"datePublished": "2026-08-15T12:27:17.609Z",
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"dateUpdated": "2026-11-06T17:05:47.188Z"
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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": "2026-08-23T12:47:25.566Z"
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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\nbinfmt_misc: use exe_file_deny_write_access() for the interpreter clone\n\nFor MISC_FMT_OPEN_FILE entries load_misc_binary() clones the\nregistered interpreter file and denies write access to the clone via\nplain deny_write_access(). The clone is installed as\nbprm->interpreter and later released by the exec machinery through\nexe_file_allow_write_access() which skips the i_writecount increment\nfor files with FMODE_FSNOTIFY_HSM set.\n\nThe deny and allow side can therefore come to different conclusions\nwhen pre-content watches are in play: if a pre-content watch is added\nto the interpreter after registration every subsequent exec through\nthat entry takes a write denial on the clone that is never paired\nwith a write allowance, driving the interpreter inode's i_writecount\nfurther down with each exec and leaving the interpreter unwritable\neven after the entry and all its users are gone.\n\nTake the write denial via exe_file_deny_write_access() so both sides\nof the pairing base their decision on the same file mode, and\npropagate failure instead of silently ignoring it: an interpreter\nthat is concurrently open for writing now fails the exec with\nETXTBSY, exactly like an interpreter freshly opened via open_exec()\nwould."
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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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"fs/binfmt_misc.c"
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],
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"versions": [
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{
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"version": "5b432413f7bbbc8b935138490a57be05c1921684",
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"lessThan": "c65eb018c12179b5e2c7afe1f0956298576fecec",
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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": "bb4715098d8e340bbbdd3a874b31f89867c8067e",
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"lessThan": "2bd860b7e752a51185960143cab9fec7bf32c84e",
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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": "c152be5adc0975c75cc4f50891c9072d52d60b47",
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"lessThan": "eea4b7c7711b1e425272d23352af157f45f4c3e3",
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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": "bf5ed2ef5cdb7b47ce606e3d48ea6eb803b31503",
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"lessThan": "2fdf8b07bee5ef99ec77773a6be05fbb8ee5cdb9",
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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": "483217fd6f7ccd98b3ed2531a54f75ed144b4499",
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"lessThan": "f1e7ea3c8e070f19771cdaef55bbeda1359ad490",
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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": "0357ef03c94ef835bd44a0658b8edb672a9dbf51",
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"lessThan": "255a758697da87a205e072e0cfc35897b8f743b1",
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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": "0357ef03c94ef835bd44a0658b8edb672a9dbf51",
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"lessThan": "f0edbaf487e4653a680a7abb91c1df94cb7886aa",
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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": "0357ef03c94ef835bd44a0658b8edb672a9dbf51",
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"lessThan": "fa5990ca8fd917003e526036bcc50413edb9722c",
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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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"fs/binfmt_misc.c"
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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": "6.18.44",
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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": "7.1.8",
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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": "6.18.44"
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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": "7.1.8"
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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/c65eb018c12179b5e2c7afe1f0956298576fecec"
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},
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{
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"url": "https://git.kernel.org/stable/c/2bd860b7e752a51185960143cab9fec7bf32c84e"
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},
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{
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"url": "https://git.kernel.org/stable/c/eea4b7c7711b1e425272d23352af157f45f4c3e3"
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},
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{
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"url": "https://git.kernel.org/stable/c/2fdf8b07bee5ef99ec77773a6be05fbb8ee5cdb9"
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},
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{
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"url": "https://git.kernel.org/stable/c/f1e7ea3c8e070f19771cdaef55bbeda1359ad490"
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},
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{
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"url": "https://git.kernel.org/stable/c/255a758697da87a205e072e0cfc35897b8f743b1"
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},
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{
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"url": "https://git.kernel.org/stable/c/f0edbaf487e4653a680a7abb91c1df94cb7886aa"
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},
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{
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"url": "https://git.kernel.org/stable/c/fa5990ca8fd917003e526036bcc50413edb9722c"
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}
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],
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"title": "binfmt_misc: use exe_file_deny_write_access() for the interpreter clone",
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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-2026-74486",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-11-06T16:58:04.544658Z"
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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": "2026-11-06T17:05:47.188Z"
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}
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}
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]
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}
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} |