CVE-2022-23176
WatchGuard Firebox and XTM Privilege Escalation Vulnerability
Description
CVE-2022-23176 is a privilege escalation vulnerability in WatchGuard Firebox and XTM firewall appliances that allows a remote attacker with unprivileged credentials to access the system with a privileged management session via exposed management access. The vulnerability effectively bypasses authentication controls on the management interface, enabling unauthorized administrative access. CISA has added CVE-2022-23176 to the Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. With an EPSS score of 0.57% (98.1st percentile), this vulnerability represents a significant risk for organizations using WatchGuard firewall products.
KEV Information
CVSS Score
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HOpen in CalculatorAffected Products
| Vendor | Product | Version |
|---|---|---|
| watchguard | fireware | >= 12.0.0, < 12.1.3; >= 12.2.0, < 12.5.7; 12.1.3; 12.5.7; 12.7.2 |
Multiple CVSS Assessments
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://arstechnica.com/information-technology/2022/04/watchguard-failed-to-disclose-critical-flaw-exploited-by-russian-hackers/(Third Party Advisory)
- https://securityportal.watchguard.com(Vendor Advisory)
- https://www.watchguard.com/support/release-notes/fireware/12/en-US/EN_ReleaseNotes_Fireware_12_1_3_U7/index.html#Fireware/en-US/resolved_issues.html(Release Notes, Vendor Advisory)
- https://www.watchguard.com/support/release-notes/fireware/12/en-US/EN_ReleaseNotes_Fireware_12_7/index.html#Fireware/en-US/resolved_issues.html(Release Notes, Vendor Advisory)
- https://www.watchguard.com/support/release-notes/fireware/12/en-US/EN_ReleaseNotes_Fireware_12_7_2/index.html#Fireware/en-US/resolved_issues.html(Release Notes, Vendor Advisory)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23176(US Government Resource)
Weakness Type
CWE-269: Improper Privilege Management
CWE-269 describes a weakness where software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control. In CVE-2022-23176, WatchGuard Firebox and XTM appliances fail to properly enforce privilege boundaries on exposed management interfaces, allowing an attacker with unprivileged credentials to escalate to a privileged management session.
Learn more: CWE-269 — Improper Privilege Management
Impact Analysis
CVE-2022-23176 allows attackers to gain full administrative control over WatchGuard Firebox and XTM firewall appliances through privilege escalation via exposed management access. As these devices serve as perimeter security gatekeepers, administrative compromise enables attackers to modify firewall rules to allow unrestricted network access, disable security features, intercept and inspect all traffic passing through the appliance, and use the compromised firewall as a persistent foothold for lateral movement into internal networks. The confidentiality of all network traffic passing through the firewall is at risk, as is the integrity of the security policies that protect the organization. The EPSS score of 0.57% (98.1st percentile) and KEV listing confirm active exploitation targeting WatchGuard deployments.
Exploit Maturity
CVE-2022-23176 is listed in the CISA Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. The EPSS score of 0.57% (98.1st percentile) indicates high exploitation probability. The vulnerability was reportedly exploited by the Sandworm threat group (attributed to Russian military intelligence) as part of the Cyclops Blink botnet campaign targeting WatchGuard devices, demonstrating nation-state interest in this vulnerability for building persistent network infrastructure.
Remediation
- Apply WatchGuard firmware updates immediately as required by CISA KEV: upgrade Firebox and XTM appliances to the latest firmware version that addresses the management access privilege escalation.
- Restrict access to the WatchGuard management interface to dedicated management networks only, blocking internet-facing management access.
- Enable multi-factor authentication for all management access to WatchGuard appliances.
- Audit firewall configurations for unauthorized changes, unexpected firewall rules, and signs of the Cyclops Blink malware or related threat group activity.
- Review WatchGuard device logs for anomalous management sessions, unexpected authentication events, and configuration modifications that may indicate exploitation.
Technical Details
CVE-2022-23176 is a privilege escalation vulnerability in WatchGuard Firebox and XTM appliances where the management interface fails to properly enforce authentication and authorization boundaries. An attacker who can access the management interface with unprivileged or low-privileged credentials can exploit a flaw in the session management logic to escalate to a fully privileged administrative session. This grants complete control over the firewall configuration, including the ability to modify security policies, create VPN tunnels, and install persistent backdoors. The Sandworm threat group leveraged this vulnerability to deploy the Cyclops Blink botnet framework on compromised WatchGuard devices.
Frequently Asked Questions
Is CVE-2022-23176 being actively exploited?
Yes. CVE-2022-23176 is listed in the CISA KEV catalog with confirmed active exploitation. The Sandworm threat group reportedly exploited this vulnerability as part of the Cyclops Blink botnet campaign targeting WatchGuard devices.
What products are affected by CVE-2022-23176?
CVE-2022-23176 affects WatchGuard Firebox and XTM firewall appliances. Organizations using these devices should immediately verify their firmware version and apply updates.
How do I fix CVE-2022-23176?
Update WatchGuard Firebox and XTM firmware to the latest patched version. Restrict management interface access to trusted networks and enable multi-factor authentication.
How severe is CVE-2022-23176?
CVE-2022-23176 is a high-severity privilege escalation vulnerability in firewall appliances that protect network perimeters. Its exploitation by the Sandworm threat group for botnet deployment demonstrates the strategic value attackers place on compromising network security infrastructure.
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