{"api_version":"1","generated_at":"2026-11-12T23:35:36+00:00","cve":"CVE-2026-120978","urls":{"html":"https://cve.report/CVE-2026-120978","api":"https://cve.report/api/cve/CVE-2026-120978.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-120978","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-120978"},"summary":{"title":"Security Advisory 0211","description":"On affected Arista EOS platforms running Border Gateway Protocol with Link State ( BGP-LS) and configured with the Dynamic Path Selection (DPS) consumer role, an attacker who has established an authenticated BGP-LS session with the device can send a crafted message to cause the BGP agent to restart unexpectedly. An Arista Pathfinder deployment is not required.","state":"PUBLISHED","assigner":"Arista","published_at":"2026-11-10 20:18:52","updated_at":"2026-11-12 19:24:37"},"problem_types":["CWE-476","CWE-476 CWE-476 NULL Pointer Dereference"],"metrics":[{"version":"4.0","source":"psirt@arista.com","type":"Secondary","score":"6","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"DECLARED","score":"6","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","data":{"baseScore":6,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}},{"version":"3.1","source":"psirt@arista.com","type":"Secondary","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"baseScore":6.5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25033-security-advisory-0211","name":"https://www.arista.com/en/support/advisories-notices/security-advisory/25033-security-advisory-0211","refsource":"psirt@arista.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-120978","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120978","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Arista Networks","product":"EOS","version":"affected 1.0.0 4.33.0F custom","platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series running EOS","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","ZTX-7200 Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]},{"source":"CNA","vendor":"Arista Networks","product":"EOS","version":"affected 4.32.0F 4.33.0F custom","platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series running EOS","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","ZTX-7200 Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]},{"source":"CNA","vendor":"Arista Networks","product":"EOS","version":"affected 4.33.0F 4.33.10M custom","platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series running EOS","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","ZTX-7200 Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]},{"source":"CNA","vendor":"Arista Networks","product":"EOS","version":"affected 4.34.0F 4.34.8M custom","platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series running EOS","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","ZTX-7200 Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]},{"source":"CNA","vendor":"Arista Networks","product":"EOS","version":"affected 4.35.0F 4.35.6M custom","platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series running EOS","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","ZTX-7200 Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]},{"source":"CNA","vendor":"Arista Networks","product":"EOS","version":"affected 4.36.0F 4.36.2F custom","platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series running EOS","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","ZTX-7200 Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series running EOS","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","ZTX-7200 Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"],"product":"EOS","vendor":"Arista Networks","versions":[{"lessThan":"4.33.0F","status":"affected","version":"1.0.0","versionType":"custom"},{"lessThan":"4.33.0F","status":"affected","version":"4.32.0F","versionType":"custom"},{"lessThanOrEqual":"4.33.10M","status":"affected","version":"4.33.0F","versionType":"custom"},{"lessThanOrEqual":"4.34.8M","status":"affected","version":"4.34.0F","versionType":"custom"},{"lessThanOrEqual":"4.35.6M","status":"affected","version":"4.35.0F","versionType":"custom"},{"lessThanOrEqual":"4.36.2F","status":"affected","version":"4.36.0F","versionType":"custom"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<pre>switch(config)#show bgp link-state summary\nBGP summary information for VRF default\nRouter identifier 0.0.0.1, local AS number 300\nNeighbor Status Codes: m - Under maintenance\n  Neighbor V AS           MsgRcvd   MsgSent  InQ OutQ  Up/Down State   NlriRcd NlriAcc NlriAdv\n  12.0.0.3 4 300               82        83    0    0 01:02:33 Estab   0      0      1\nswitch(config)#\n\nswitch#show bgp instance | section Address family Link State:\nAddress family Link State:\n  Role(s): Consumer (DPS)</pre>"}],"value":"switch(config)#show bgp link-state summary\nBGP summary information for VRF default\nRouter identifier 0.0.0.1, local AS number 300\nNeighbor Status Codes: m - Under maintenance\n  Neighbor V AS           MsgRcvd   MsgSent  InQ OutQ  Up/Down State   NlriRcd NlriAcc NlriAdv\n  12.0.0.3 4 300               82        83    0    0 01:02:33 Estab   0      0      1\nswitch(config)#\n\nswitch#show bgp instance | section Address family Link State:\nAddress family Link State:\n  Role(s): Consumer (DPS)"}],"descriptions":[{"lang":"en","value":"On affected Arista EOS platforms running Border Gateway Protocol with Link State ( BGP-LS) and configured with the Dynamic Path Selection (DPS) consumer role, an attacker who has established an authenticated BGP-LS session with the device can send a crafted message to cause the BGP agent to restart unexpectedly. An Arista Pathfinder deployment is not required."}],"impacts":[{"capecId":"CAPEC-129","descriptions":[{"lang":"en","value":"CAPEC-129 Pointer Manipulation"}]}],"metrics":[{"cvssV3_1":{"baseScore":6.5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},{"cvssV4_0":{"baseScore":6,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","description":"CWE-476 NULL Pointer Dereference","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-10T20:09:52.613Z","orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","shortName":"Arista"},"references":[{"tags":["vendor-advisory"],"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25033-security-advisory-0211"}],"source":{"advisory":"Security Advisory 0211","defects":["1924022"],"discovery":"INTERNAL"},"title":"Security Advisory 0211"}},"cveMetadata":{"assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","assignerShortName":"Arista","cveId":"CVE-2026-120978","datePublished":"2026-11-10T20:09:52.613Z","dateReserved":"2026-11-03T05:14:06.127Z","dateUpdated":"2026-11-10T20:09:52.613Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-10 20:18:52","lastModifiedDate":"2026-11-12 19:24:37","problem_types":["CWE-476","CWE-476 CWE-476 NULL Pointer Dereference"],"metrics":{"cvssMetricV40":[{"source":"psirt@arista.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"psirt@arista.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"120978","Ordinal":"1","Title":"Security Advisory 0211","CVE":"CVE-2026-120978","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"120978","Ordinal":"1","NoteData":"On affected Arista EOS platforms running Border Gateway Protocol with Link State ( BGP-LS) and configured with the Dynamic Path Selection (DPS) consumer role, an attacker who has established an authenticated BGP-LS session with the device can send a crafted message to cause the BGP agent to restart unexpectedly. An Arista Pathfinder deployment is not required.","Type":"Description","Title":"Security Advisory 0211"}]}}}