Arista Wi-Fi Access Points: Memory corruption in wired uplink endpoints
Summary
Affected Arista Wi-Fi access points contain a memory corruption flaw in their wired uplink network endpoints. An unauthenticated attacker on the same network segment as the access point's wired uplink can crash the sensor service or potentially achieve remote code execution. The CVE record classifies the flaw as CWE-121 (stack-based buffer overflow).
Affected
- Arista Wi-Fi access point firmware 22.0.0 to 22.0.1F-32
- Arista Wi-Fi access point firmware 21.3.0 to 21.3.0M-13
- Arista Wi-Fi access point firmware 1.0.0 to below 21.3.0
- Versions before 21.3.0 are listed as affected in the vendor record; the vendor marks the default configuration as unaffected for the earlier train.
Fixed in
- 22.1.1F-61 and later in the 22.x train
- 21.4.0M-12 and later in the 21.x train
Workaround
No mitigation or workaround available.
Exploitation
- No exploitation reports or public proof-of-concept code known at the time of research.
- CISA SSVC: exploitation none, not automatable, total technical impact.
- Exploitation requires access to the access point's wired uplink network segment.
Our recommendation
- Update affected access points to the fixed releases 22.1.1F-61 or later (22.x) or 21.4.0M-12 or later (21.x).
- Until patched, restrict access to the wired uplink network segment of the access points.
- Inventory all Arista access points and verify firmware versions.
- Monitor access point logs for sensor service crashes.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Arista Security Advisory 0197 www.arista.com
- OpenCVE CVE-2026-102167 app.opencve.io
- Arista Security Advisory 0184 www.arista.com
- Vulners copy of Arista 0197 vulners.com
- Arista Advisories & Notices www.arista.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 08:15.
Original description (NVD)
On affected Arista Wi-Fi access points, a memory corruption vulnerability exists in access point's wired uplink network endpoints. An unauthenticated attacker can crash the sensor service or potentially achieve remote code execution. Exploitation requires the attacker to be on the same network segment as the access point's wired uplink.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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