219 lines
10 KiB
JSON
219 lines
10 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-2026-73455",
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"assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
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"state": "PUBLISHED",
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"assignerShortName": "Arista",
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"dateReserved": "2026-08-12T16:45:03.510Z",
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"datePublished": "2026-09-16T09:46:15.888Z",
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"dateUpdated": "2026-09-16T17:56:12.396Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
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"shortName": "Arista",
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"dateUpdated": "2026-09-16T09:46:15.888Z"
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},
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"title": "Security Advisory 0173",
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"descriptions": [
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{
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"lang": "en",
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"value": "On affected platforms running Arista EOS with Open Shortest Path First version 3 (OSPFv3) configured, a specially crafted packet can cause the OSPFv3 agent to restart unexpectedly.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>On affected platforms running Arista EOS with Open Shortest Path First version 3 (OSPFv3) configured, a specially crafted packet can cause the OSPFv3 agent to restart unexpectedly.</p>"
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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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"vendor": "Arista Networks",
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"product": "EOS",
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"defaultStatus": "unaffected",
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"versions": [
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{
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"version": "1.0.0",
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"lessThan": "4.33.0F",
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"status": "affected",
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"versionType": "custom"
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},
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{
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"version": "4.33.0F",
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"lessThanOrEqual": "4.33.8M",
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"status": "affected",
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"versionType": "custom"
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},
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{
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"version": "4.34.0F",
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"lessThanOrEqual": "4.34.6M",
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"status": "affected",
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"versionType": "custom"
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},
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{
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"version": "4.35.0F",
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"lessThanOrEqual": "4.35.4M",
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"status": "affected",
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"versionType": "custom"
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},
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{
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"version": "4.36.0F",
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"lessThanOrEqual": "4.36.0.1F",
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"status": "affected",
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"versionType": "custom"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"value": "The vulnerability is exploitable when OSPFv3 is configured with at least one active neighbor:\n\nswitch>show ospfv3\nRouting Process \"ospfv3\" with ID 192.0.2.0 and Instance 0 VRF default\nIt has 1 fully adjacent neighbors\n\nswitch>show ospfv3 neighbor\nNeighbor 192.0.3.0 VRF default priority is 1, state is Full",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>The vulnerability is exploitable when OSPFv3 is configured with at least one active neighbor:</p>\n<pre>\nswitch>show ospfv3\nRouting Process "ospfv3" with ID 192.0.2.0 and Instance 0 VRF default\nIt has 1 fully adjacent neighbors\n\nswitch>show ospfv3 neighbor\nNeighbor 192.0.3.0 VRF default priority is 1, state is Full\n</pre>"
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}
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]
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}
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],
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"workarounds": [
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{
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"lang": "en",
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"value": "Configure OSPFv3 IPsec encryption to authenticate/encrypt OSPFv3 packets.\n\nPer-interface encryption:\n\nswitch(config)# interface <interface-name>\nswitch(config-if)# ospfv3 encryption ipsec spi <spi-value> esp aes-256-cbc sha1 passphrase <shared-passphrase>\n\nPer-area encryption:\n\nswitch(config)# router ospfv3\nswitch(config-router-ospfv3)# address-family ipv4\nswitch(config-router-ospfv3-af)# area <area-id> encryption ipsec spi <spi-value> esp aes-256-cbc sha1 passphrase <shared-passphrase>",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>Configure OSPFv3 IPsec encryption to authenticate/encrypt OSPFv3 packets.</p>\n<p>Per-interface encryption:</p>\n<pre>\nswitch(config)# interface <interface-name>\nswitch(config-if)# ospfv3 encryption ipsec spi <spi-value> esp aes-256-cbc sha1 passphrase <shared-passphrase>\n</pre>\n<p>Per-area encryption:</p>\n<pre>\nswitch(config)# router ospfv3\nswitch(config-router-ospfv3)# address-family ipv4\nswitch(config-router-ospfv3-af)# area <area-id> encryption ipsec spi <spi-value> esp aes-256-cbc sha1 passphrase <shared-passphrase>\n</pre>"
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}
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]
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "The following EOS releases contain the fix:\n- 4.33.9M and later in the 4.33.x train\n- 4.34.7M and later in the 4.34.x train\n- 4.35.5M and later in the 4.35.x train\n- 4.36.1F and later in the 4.36.x train\n\nA hotfix (version 1.0) is available for 4.36.0.1F, 4.35.4M, 4.34.6M, and 4.33.8M.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>The following EOS releases contain the fix:</p>\n<ul>\n<li>4.33.9M and later in the 4.33.x train</li>\n<li>4.34.7M and later in the 4.34.x train</li>\n<li>4.35.5M and later in the 4.35.x train</li>\n<li>4.36.1F and later in the 4.36.x train</li>\n</ul>\n<p>A hotfix (version 1.0) is available for 4.36.0.1F, 4.35.4M, 4.34.6M, and 4.33.8M.</p>"
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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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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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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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},
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV4_0": {
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"version": "4.0",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
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"baseScore": 8.9,
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"baseSeverity": "HIGH"
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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-130",
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"description": "CWE-130 Improper Handling of Length Parameter Inconsistency"
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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://www.arista.com/en/support/advisories-notices/security-advisory/24729-security-advisory-0173",
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"tags": [
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"vendor-advisory"
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]
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-231",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-231 Oversized Serialized Data Payloads"
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}
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]
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}
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],
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"source": {
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"advisory": "Security Advisory 0173",
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"discovery": "INTERNAL",
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"defects": [
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"BUG1307559"
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]
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},
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"datePublic": "2026-09-09T00:00:00.000Z"
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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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"timestamp": "2026-09-16T17:56:02.507882Z",
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"id": "CVE-2026-73455",
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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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"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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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-16T17:56:12.396Z"
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}
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}
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]
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}
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} |