CVE-2026-1498
📋 TL;DR
An LDAP injection vulnerability in WatchGuard Fireware OS allows remote attackers to retrieve sensitive information from connected LDAP servers through web interfaces. Attackers could also authenticate as LDAP users with partial identifiers if they have valid passwords. This affects Fireware OS versions 12.0-12.11.6, 12.5-12.5.15, and 2025.1-2026.0.
💻 Affected Systems
- WatchGuard Fireware OS
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete LDAP directory information disclosure including user credentials, group memberships, and organizational data, plus authentication bypass for privileged accounts.
Likely Case
Information disclosure of LDAP directory contents including usernames, email addresses, and organizational structure.
If Mitigated
Limited information exposure if LDAP server has minimal sensitive data and strong authentication requirements.
🎯 Exploit Status
LDAP injection typically requires minimal technical skill. Exploitation depends on LDAP server configuration and available web interfaces.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific fixed versions
Vendor Advisory: https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00001
Restart Required: Yes
Instructions:
1. Review vendor advisory for fixed versions. 2. Backup configuration. 3. Download and apply firmware update. 4. Reboot firewall. 5. Verify update successful.
🔧 Temporary Workarounds
Disable LDAP authentication
allTemporarily disable LDAP authentication on affected interfaces
Restrict web interface access
allLimit authentication and management web interfaces to trusted networks only
🧯 If You Can't Patch
- Implement network segmentation to isolate LDAP servers
- Enable detailed logging and monitoring for LDAP query anomalies
🔍 How to Verify
Check if Vulnerable:
Check Fireware OS version via web interface: System > About or CLI: show versionCheck Version:
show versionVerify Fix Applied:
Verify version is outside affected ranges and test LDAP authentication functionality📡 Detection & Monitoring
Log Indicators:
- Unusual LDAP query patterns
- Failed authentication attempts with special characters
- Multiple authentication attempts from single source
Network Indicators:
- LDAP queries containing special characters like *, (, ), &, |, =
- Unusual traffic to LDAP ports from firewall
SIEM Query:
source="firewall" AND (ldap_query CONTAINS "*" OR ldap_query CONTAINS "(" OR ldap_query CONTAINS ")")