CVE-2026-22911
📋 TL;DR
This vulnerability exposes password hashes for system accounts within firmware update files. Remote attackers could recover credentials and gain unauthorized access to affected devices. This impacts systems using vulnerable firmware from the affected vendor.
💻 Affected Systems
- SICK industrial devices with vulnerable firmware
📦 What is this software?
⚠️ 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
Attackers gain administrative access to devices, potentially compromising entire systems, exfiltrating data, or disrupting operations.
Likely Case
Attackers gain limited system access, potentially escalating privileges or moving laterally within networks.
If Mitigated
With proper controls, attackers cannot access firmware files or hash recovery is prevented by strong password policies.
🎯 Exploit Status
Exploitation requires access to firmware update files and hash cracking capabilities. No public exploit code identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://sick.com/psirt
Restart Required: Yes
Instructions:
1. Review vendor advisory at sick.com/psirt. 2. Identify affected products and versions. 3. Download and apply firmware updates from official vendor sources. 4. Restart devices as required.
🔧 Temporary Workarounds
Restrict firmware file access
allLimit access to firmware update files to authorized personnel only
Implement strong password policies
allUse complex passwords to make hash recovery more difficult
🧯 If You Can't Patch
- Isolate affected devices in segmented network zones
- Monitor for unauthorized access attempts and firmware file access
🔍 How to Verify
Check if Vulnerable:
Check firmware version against vendor advisory and inspect firmware files for exposed hashes if accessibleCheck Version:
Vendor-specific command; consult device documentationVerify Fix Applied:
Verify firmware version matches patched version from vendor advisory and confirm hashes are no longer exposed📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to firmware files
- Unusual authentication patterns
Network Indicators:
- Unexpected firmware file transfers
- Suspicious hash cracking traffic
SIEM Query:
Search for events related to firmware file access or authentication failures on industrial devices🔗 References
- https://sick.com/psirt
- https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
- https://www.first.org/cvss/calculator/3.1
- https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0001.json
- https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0001.pdf
- https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf
