CVE-2026-73457: Arista Networks EOS · Sensitive Data in Logs
Affects Arista Networks EOSSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium · fixed in 4.36.2F : update Arista Networks EOS when convenient.
Data as of 31 Oct 2026, 20:20 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.36.2F, 4.35.6M, 4.34.8M
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
Upgrade Arista Networks EOS to 4.36.2F, 4.35.6M or 4.34.8M.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Arista NetworksEOS | Affected
| Fixed in
|
| Arista NetworksEOS | Affected
| Fixed in
|
| Arista NetworksEOS | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restrict access to logs containing sensitive information and consider disabling gNPSI if feasible to reduce exposure.
Description
CVE-2026-73457 is a vulnerability in Arista Networks EOS where gNPSI client credentials may be logged in clear text in local or remote accounting logs on affected versions. This exposure occurs when the gRPC Network Packet Sampling Interface (gNPSI) is enabled, potentially allowing authenticated users to access sensitive credential information. The vulnerability affects specific versions of EOS and has a medium severity rating with a CVSS score of 5.3.