CVE-2026-75944: Arista Networks EOS · Incomplete Cleanup
Affects Arista Networks EOSSource CVE Database V5
Not known to be exploited · CVSS 2.6 Low.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 14 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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Arista NetworksEOS | Affected
| Fixed in– |
AI-suggested
Since the issue requires an administrator to restart the AclAgent for the stale ACL to be applied, avoiding unnecessary restarts can mitigate the risk. Monitor vendor advisories for any forthcoming patches or updates.
Description
CVE-2026-75944 is a low-severity vulnerability in Arista Networks EOS where a race condition during supplicant re-authentication can cause a stale ACL entry to persist. If the AclAgent service is restarted by an administrator, this stale ACL entry may be applied incorrectly to new supplicants, leading to improper access control enforcement. This issue requires manual intervention (an AclAgent restart) to manifest.