# CVE-2026-82332: Fireware OS Improper Authentication in AuthPoint MFA Verification Allows Session Hijacking

Status: published. Published: 2026-10-27. Updated: 2026-11-04.

An improper authentication vulnerability in WatchGuard Fireware OS's AuthPoint multi-factor authentication process allows a local, unauthenticated attacker on the appliance to hijack another user's in-progress MFA session by supplying a specially crafted request and convincing the victim user to accept an MFA push notification.

## Remediation

- fix: Fireware OS 2026.4, Fireware OS 12.12.4 (source: CNA: WatchGuard)

## Affected products and versions

- WatchGuard / Fireware OS: ≥ 2025.1; < 2026.4 (affected, custom); ≥ 12.7; < 12.12.4 (affected, custom). Source: CNA: WatchGuard; platforms: Default

## Severity and prioritization

- CVSS 4.0: 5.6 (medium); CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N; source: CNA: WatchGuard

- CISA KEV: No listing in collected sources

- EPSS: 0.12% as of 2026-11-04; percentile 1.63%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-287, CWE-346

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://psirt.watchguard.com/CVE-2026-82332 (CNA: WatchGuard; vendor-advisory)

## Provenance

- CNA: WatchGuard: https://www.cve.org/CVERecord?id=CVE-2026-82332; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-82332; retrieved 2026-11-04; source updated Not reported

Revision: 4b8467d2ab12d1fdba3932a4354ca445b1c54ff2b3e0aa0f3771218357f28933

Canonical: https://y2.dev/cve/CVE-2026-82332

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