CVE-2026-121371

HIGHCVSS 7.5/10EPSS 0.68%

Last modified

CVE-2026-121371 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On affected EOS versions with the eAPI service enabled, a specially crafted HTTP request can allow an unauthenticated, remote attacker to read arbitrary files, including sensitive credentials from the switch filesystem.. EPSS estimates a 0.68% chance of exploitation in the next 30 days.

Description

On affected EOS versions with the eAPI service enabled, a specially crafted HTTP request can allow an unauthenticated, remote attacker to read arbitrary files, including sensitive credentials from the switch filesystem.

Metrics

Weakness Enumeration

Affected Software

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

VendorProductVersions
Arista NetworksEOS>= 4.36.0F, <= 4.36.3M; >= 4.35.0F, <= 4.35.7M; >= 4.34.0F, <= 4.34.9M; >= 4.33.0F, <= 4.33.11M; >= 4.32.0F, < 4.33.0F; >= 1.0.0, < 4.32.0F

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-121371?
On affected EOS versions with the eAPI service enabled, a specially crafted HTTP request can allow an unauthenticated, remote attacker to read arbitrary files, including sensitive credentials from the switch filesystem.
How severe is CVE-2026-121371?
CVE-2026-121371 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.
How do I fix CVE-2026-121371?
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