CVE-2026-93434 PUBLISHED

Fireware OS XPath Injection in SSH Authentication Allows Blind Extraction of Configuration Secrets

Assigner: WatchGuard
Reserved: 17.09.2026 Published: 27.10.2026 Updated: 27.10.2026

An XPath injection vulnerability in WatchGuard Fireware OS's SSH authentication process allows a remote, unauthenticated attacker with access to the management SSH interface to extract sensitive configuration data by submitting a specially crafted request.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	WatchGuard
Product	Fireware OS
Versions	Default: unaffected affected from 12.0 to 12.5.22 (excl.)

Vendor	WatchGuard
Product	Fireware OS
Versions	Default: unaffected affected from 2025.1 to 2026.4 (excl.) affected from 12.0 to 12.12.4 (excl.)

Affected Configurations

This vulnerability affects Firebox deployments where an attacker has network access to the management SSH interface.

Exploits

WatchGuard is not aware of any exploitation of this vulnerability in the wild.

Solutions

Fireware OS 12.5.22, Fireware OS 2026.4, Fireware OS 12.12.4

Credits

Markus Piéton, Fabian Weber, Florian Roth (all CODE WHITE GmbH) finder

References

https://psirt.watchguard.com/CVE-2026-93434

Problem Types

CWE-20 CWE
CWE-208 CWE
CWE-643 CWE