TI-2026-68916 Aliases CVE-2026-102168 GHSA-v59j-jpcg-c5vq

Integer underflow in Arista Wi-Fi access points crashes portal

LOW 31CWE-191Published 2026-10-06 · Updated 2026-10-06

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-191 and the CVSS impact.

Summary

Arista Wi-Fi Access Points from 1.0.0 before 21.3.0, from 21.3.0 through 21.3.0M-13, and from 22.0.0 through 22.0.1F-32 are affected when Captive Portal is enabled. An integer underflow (CWE-191) lets an unauthenticated wireless client crash the portal service with a crafted HTTP request. The crash causes a temporary denial of service until the service restarts automatically, and remote code execution is not possible.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

On affected Arista Wi-Fi access points with Captive Portal enabled, an unauthenticated wireless client connected to a Captive-Portal-enabled SSID can crash the portal service with a crafted HTTP request. This results in a temporary denial of service until the service automatically restarts. Remote code execution is not possible.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00279 20th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Arista	Wi-Fi Access Points	22.0.0 – 22.0.1F-32; 21.3.0 – 21.3.0M-13; 1.0.0 to before 21.3.0	—	No fix listed	CNA

Wi-Fi Access Points VendorArista Affected 22.0.0 – 22.0.1F-32; 21.3.0 – 21.3.0M-13; 1.0.0 to before 21.3.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Arista Wi-Fi Access Points.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2026-10-06
Arista Networks Wi-Fi Access Points — arista.com/en/support/advisories-notices/security-advisory/…
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-68917 Denial of service in Arista Wi-Fi access point captive portalPriority LOW 31
Show all 2 records → Advisory →

Timeline

2026-10-06 Threatist record created from CVE-2026-102168
2026-10-07 Alias added: GHSA-v59j-jpcg-c5vq

References

Advisory 1

https://www.arista.com/en/support/advisories-notices/security-advisory/24810-security-advisory-0194

TI-2026-79524 Privilege escalation in Arista VeloCloud Orchestrator on-premises KEVCVSS 4.0CRITICAL 9.4
TI-2026-63212 Improper input validation in Arista VeloCloud Orchestrator On-Prem KEVCVSS 4.0CRITICAL 9.5
TI-2026-13992 VeloCloud Orchestrator OS Command Injection KEVCVSS 4.0CRITICAL 10.0
TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8

See all 216 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences