On affected platforms running Arista EOS, under certain circumstances plaintext shared secrets for configured Terminal Access Controller Access-Control System Plus (TACACS+) servers

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Affected scope and exposure questions

The current feed maps Arista Networks/EOS (generic). Check affected ranges and fixed versions before updating.

Recommended response

1. 1Check inventory. Check lockfiles and deployed manifests for Arista Networks/EOS.
2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

1. Published upstream

   Sep 15, 2026

   Evidence: source:cvelist:source_dates:source-dates:record

2. Source modified

   Sep 15, 2026

   Evidence: source:cvelist:source_dates:source-dates:record

3. First seen by HOL

   Sep 15, 2026

Sources and claim methodology

• Source referencearista.com

Related CVEs

• On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) relay/snooping configured with the information option (Option 82), or with the DHCP server configured with match criteria based on the information option, an unauthentSame arista networks/eos package
• On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) relay configured, an unauthenticated attacker with network access could send a crafted DHCP reply packet from an IP address that is not configured as a helper/destinatSame arista networks/eos package
• On affected platforms running Arista EOS with VRRPv2 IP Authentication Header (IP-AH) authentication configured, an unauthenticated attacker with access to the layer 2 network segment on which VRRP is running could bypass VRRP authentication and claim theSame arista networks/eos package
• Rsbuild < 2.0.9 Command Injection via openBrowser() URL HandlingSame generic ecosystem
• Fireshare has Unauthenticated Argument Injection to Arbitrary File Write/OverwriteSame generic ecosystem
• Fireshare has unauthenticated SSRF via missing login_required on webhook test endpointsSame generic ecosystem