CVE-2025-2826 Security feature bypass in EOS
Attackers can bypass ingress ACLs on Arista EOS devices, allowing unauthorized packet access or causing legitimate traffic drops.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-2826?
CVE-2025-2826 is a low-severity vulnerability in Arista Networks EOS, published on 27 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
n affected platforms running Arista EOS, ACL policies may not be enforced. IPv4 ingress ACL, MAC ingress ACL, or IPv6 standard ingress ACL enabled on one or more ethernet or LAG interfaces may result in ACL policies not being enforced for ingress packets. This can cause incoming packets to incorrectly be allowed or denied. The two symptoms of this issue on the affected release and platform are:
* Packets which should be permitted may be dropped and, * Packets which should be dropped may be permitted.
Weakness: CWE-1284
Which versions are affected by CVE-2025-2826?
How do I fix CVE-2025-2826?
No fix has been published for CVE-2025-2826 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-2826 being exploited?
There is no known exploitation of CVE-2025-2826 in the wild and no public exploit code.
Sources
Also known as GHSA-6f46-73v7-w4mr.