CVE-2026-22914
📋 TL;DR
This vulnerability allows attackers with limited permissions to write files to specific locations on affected devices, potentially enabling system manipulation. It affects SICK industrial control systems and similar devices where file permissions are improperly configured. The moderate CVSS score reflects the need for some existing access but significant potential impact.
💻 Affected Systems
- SICK industrial control systems and related devices
📦 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
An attacker could write malicious files to critical system locations, potentially gaining elevated privileges, disrupting operations, or establishing persistence for further attacks.
Likely Case
Attackers with basic access could modify configuration files or write scripts to specific directories, leading to service disruption or limited system manipulation.
If Mitigated
With proper file permission controls and least privilege principles, impact is limited to non-critical directories with minimal system effect.
🎯 Exploit Status
Exploitation requires some level of access but is technically simple once initial foothold is gained. No public exploit code is mentioned in provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://sick.com/psirt
Restart Required: Yes
Instructions:
1. Check SICK PSIRT for specific advisory. 2. Download and apply recommended firmware/software updates. 3. Restart affected devices. 4. Verify file permissions are properly configured post-update.
🔧 Temporary Workarounds
Restrict file permissions
linuxManually adjust file system permissions to prevent unauthorized writes to sensitive locations
chmod 755 /path/to/sensitive/directories
chown root:root /path/to/sensitive/files
Implement least privilege access
linuxReduce user permissions to minimum required for operations
usermod -G restricted_group username
visudo to edit sudoers file
🧯 If You Can't Patch
- Implement strict file system monitoring and integrity checking
- Segment network to isolate vulnerable systems and limit lateral movement
🔍 How to Verify
Check if Vulnerable:
Check file permissions on sensitive directories: ls -la /critical/paths and verify write permissions are restrictedCheck Version:
Check device firmware version via vendor-specific command or web interfaceVerify Fix Applied:
Verify updated firmware version matches vendor recommendation and test file write attempts to previously vulnerable locations📡 Detection & Monitoring
Log Indicators:
- Unexpected file writes to system directories
- Permission change events
- Failed authorization attempts followed by successful file modifications
Network Indicators:
- Unusual SMB/NFS traffic to industrial devices
- Unexpected administrative protocol usage
SIEM Query:
source="*syslog*" AND (event="file_write" OR event="permission_change") AND (path="/critical/*" OR user="limited_user")🔗 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
