CVE-2026-120980

MEDIUMCVSS 5.3/10EPSS 0.26%

Last modified

CVE-2026-120980 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a BGP session with the PE routers can send a specially crafted BGP packet to cause the BGP agent to restart unexpectedly.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a BGP session with the PE routers can send a specially crafted BGP packet to cause the BGP agent to restart unexpectedly.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Arista NetworksEOS>= 4.33.0F, <= 4.33.10M; >= 4.34.0F, <= 4.34.8M; >= 4.35.0F, <= 4.35.6M; >= 4.36.0F, <= 4.36.2F

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-120980?
On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a BGP session with the PE routers can send a specially crafted BGP packet to cause the BGP agent to restart unexpectedly.
How severe is CVE-2026-120980?
CVE-2026-120980 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2026-120980?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST