# CVE-2026-102168: Arista Wi-Fi Access Point denial of service in Captive Portal

Source: https://junglewise.ai/threats/cve-2026-102168-on-affected-arista-wi-fi-access-points-with-captive-portal  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2026-102168 · Severity: medium · CVSS 6.5 · Published 2026-10-06

Arista Wi-Fi access points with Captive Portal enabled allow unauthenticated wireless clients to crash the portal service with a crafted HTTP request, causing temporary service outages. An attacker connected to an affected wireless network can repeatedly trigger these crashes to sustain the denial of service. While remote code execution is not possible, this disrupts network access for legitimate users relying on the captive portal authentication.

Technologies: [Arista Wi-Fi Access Point](https://junglewise.ai/threats/technologies/wi-fi-access-point). Vendors: [Arista](https://junglewise.ai/threats/vendors/arista).

## Quick answers

**Is CVE-2026-102168 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102168 being exploited in the wild.

**How severe is CVE-2026-102168?** Medium severity, with a CVSS score of 6.5, published 6 October 2026.

**Which products and versions are affected?** Arista Wi-Fi Access Point 22.0.1F-32 and below (22.x train); 21.3.0M-13 and below (21.x train); all prior releases.

**Is there a fix for CVE-2026-102168?** Yes: fixed in Wi-Fi Access Point 22.1.1F and later (22.x train); 21.4.0M-12 and later (21.x train). Until then: Disable Captive Portal on all SSIDs if not required; if Captive Portal is necessary, no workaround is available and upgrade is required. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-102168 attacked?** It is attacked from the adjacent network, in a network appliance.

**Am I affected by CVE-2026-102168?** Check whether you run Arista Wi-Fi Access Point at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Wi-Fi Access Point 22.1.1F and later (22.x train); 21.4.0M-12 and later (21.x train)

Disable Captive Portal on all SSIDs if not required; if Captive Portal is necessary, no workaround is available and upgrade is required.

## Technical details

Two vulnerabilities (CVE-2026-102168 and CVE-2026-102169) affect the Captive Portal service in Arista Wi-Fi access points, caused by an integer underflow (CWE-191) and NULL pointer dereference (CWE-476) respectively. An unauthenticated wireless client associated with a captive-portal-enabled SSID can send a crafted HTTP request over the adjacent network to crash the service; CVE-2026-102169 allows sustained low-rate attacks to maintain the denial of service. The service automatically restarts but no RCE is possible.

## Affected products

- Arista Wi-Fi Access Point 22.0.1F-32 and below (22.x train); 21.3.0M-13 and below (21.x train); all prior releases

## Timeline

- 2026-10-06: disclosed

## References

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

## Related threats

- [Arista Wi-Fi Access Point denial of service in Captive Portal](https://junglewise.ai/threats/cve-2026-102169-on-affected-arista-wi-fi-access-points-with-captive-portal)
- [Arista Wi-Fi Access Point memory corruption in wired uplink](https://junglewise.ai/threats/cve-2026-102167-on-affected-arista-wi-fi-access-points-a-memory-corruption)
- [Arista Wi-Fi Access Point stack-based buffer overflow in capture service](https://junglewise.ai/threats/cve-2026-102165-on-affected-arista-wi-fi-access-points-an-unauthenticated)
- [Arista Wi-Fi Access Point WIPS out-of-bounds write](https://junglewise.ai/threats/cve-2026-102163-on-affected-arista-access-points-with-wireless-intrusion)
- [Arista Wi-Fi Access Point stack overflow in wireless gateway service](https://junglewise.ai/threats/cve-2026-102162-on-affected-arista-wi-fi-access-points-with-captive-portal-or)