CVE-2026-121371

HIGH
MEDIUM Priority: 0.06 BB Relevance: 78/100
Published: 2026-11-10 Modified: 2026-11-12 First seen: 2026-11-10 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: High
VI: None
VA: None

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.

Weakness Classification (1)

Affected Software (12)

VendorProductVersion
Arista Networks EOS 4.36.0F
Arista Networks EOS 4.35.0F
Arista Networks EOS 4.34.0F
Arista Networks EOS 4.33.0F
Arista Networks EOS 4.32.0F < 4.33.0F
Arista Networks EOS 1.0.0 < 4.32.0F
Arista Networks EOS 4.36.0F
Arista Networks EOS 4.35.0F
Arista Networks EOS 4.34.0F
Arista Networks EOS 4.33.0F
Arista Networks EOS 4.32.0F < 4.33.0F
Arista Networks EOS 1.0.0 < 4.32.0F

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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

EPSS — Exploitation Probability

0.68%
Raw Score 0.006830
Percentile 53.1%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00683
2026-11-13
0.00683
2026-11-12
0.00683

Intelligence Sources

mitre ref →
nvd ref →