CVE-2025-2826

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Arista NetworksEOS4.33.2Faffected

Weaknesses

  • CWE-1284: CWE-1284 Improper Validation of Specified Quantity in Input

Workarounds

No workaround is available. Ingress ACLs may be applied as egress, if resources permit and the policy is applicable.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References