8.2

CVE-2023-5502: On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, a malicious supplicant may bypass authentication.

Awaiting analysis
Published 04-06-2026Last modified 05-06-2026

Vulnerability summary

CVE-2023-5502 is a high (CVSS 8.2) Improper Authentication vulnerability in arista networks eos. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23.4% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v4.0 (CVE.org)
EPSS score
0.32%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 04-06-2026
    PublishedVulnerability first disclosed.
  2. 05-06-2026
    Last modifiedVulnerability information updated.

Description

On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, and routing enabled on the access VLAN of the ports, a malicious supplicant may be able to bypass the requirement to perform 802.1x authentication.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.32% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Arista networks1 product
  • eos≥ 4.31.0, ≤ 4.31.0F | ≥ 4.30.0, ≤ 4.30.4M | ≥ 4.29.0, ≤ 4.29.6M | ≥ 4.28.0, ≤ 4.28.8M | ≥ 4.27.0, ≤ 4.27.11M | ≥ 4.26.0, ≤ 4.26.11M | ≥ 4.25.0, ≤ 4.25.11M | ≥ 4.24.0, ≤ 4.24.11M

1 vendor · 1 product

References

1 links