260 lines
12 KiB
JSON
260 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-2021-47386",
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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": "2024-05-21T14:58:30.813Z",
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"datePublished": "2024-05-21T15:03:46.274Z",
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"dateUpdated": "2026-05-11T13:53:41.298Z"
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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": "2026-05-11T13:53:41.298Z"
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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\nhwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field\n\nIf driver read val value sufficient for\n(val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7))\nfrom device then Null pointer dereference occurs.\n(It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)\nAlso lm75[] does not serve a purpose anymore after switching to\ndevm_i2c_new_dummy_device() in w83791d_detect_subclients().\n\nThe patch fixes possible NULL pointer dereference by removing lm75[].\n\nFound by Linux Driver Verification project (linuxtesting.org).\n\n[groeck: Dropped unnecessary continuation lines, fixed multi-line alignment]"
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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/hwmon/w83791d.c"
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],
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"versions": [
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{
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"version": "358d2071100d84cfe6ef4a9d70ac0d998a1d501e",
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"lessThan": "44d3c480e4e2a75bf6296a18b4356157991ccd80",
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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": "358d2071100d84cfe6ef4a9d70ac0d998a1d501e",
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"lessThan": "516d9055039017a20a698103be2b556b4c976bb8",
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"status": "affected",
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},
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{
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"version": "358d2071100d84cfe6ef4a9d70ac0d998a1d501e",
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"lessThan": "16887ae4e3defd2c4e7913b6c539f33eaf4eac5c",
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{
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"version": "358d2071100d84cfe6ef4a9d70ac0d998a1d501e",
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"lessThan": "943c15ac1b84d378da26bba41c83c67e16499ac4",
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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/hwmon/w83791d.c"
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],
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"versions": [
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{
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"version": "5.4",
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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": "5.4",
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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": "5.4.151",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.71",
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"lessThanOrEqual": "5.10.*",
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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": "5.14.10",
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"lessThanOrEqual": "5.14.*",
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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": "5.15",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.4",
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"versionEndExcluding": "5.4.151"
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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": "5.4",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.4",
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"versionEndExcluding": "5.15"
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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/44d3c480e4e2a75bf6296a18b4356157991ccd80"
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},
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{
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"url": "https://git.kernel.org/stable/c/516d9055039017a20a698103be2b556b4c976bb8"
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},
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{
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"url": "https://git.kernel.org/stable/c/16887ae4e3defd2c4e7913b6c539f33eaf4eac5c"
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},
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{
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"url": "https://git.kernel.org/stable/c/943c15ac1b84d378da26bba41c83c67e16499ac4"
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}
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],
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"title": "hwmon: (w83791d) Fix NULL pointer dereference by removing unnecessary structure field",
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"x_generator": {
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"engine": "bippy-1.2.0"
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"adp": [
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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"cweId": "CWE-476",
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"lang": "en",
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"description": "CWE-476 NULL Pointer Dereference"
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}
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.8,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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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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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-05-28T18:28:32.870309Z",
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"id": "CVE-2021-47386",
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"options": [
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{
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"Exploitation": "none"
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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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"dateUpdated": "2024-11-13T18:21:04.770Z"
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"dateUpdated": "2024-08-04T05:39:59.316Z"
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"title": "CVE Program Container",
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