CVE-2026-24799
📋 TL;DR
This CVE describes a classic buffer overflow vulnerability in dlib's zlib modules that allows attackers to write data beyond allocated buffer boundaries. It affects all systems using dlib versions before 19.24.9. Successful exploitation could lead to arbitrary code execution or denial of service.
💻 Affected Systems
- dlib library
⚠️ 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
Remote code execution with the privileges of the vulnerable process, potentially leading to complete system compromise.
Likely Case
Application crash (denial of service) or limited memory corruption leading to unstable behavior.
If Mitigated
Application crash contained within security boundaries with no privilege escalation.
🎯 Exploit Status
Exploitation requires triggering the vulnerable inflate.C code path with malicious input.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 19.24.9 and later
Vendor Advisory: https://github.com/davisking/dlib/pull/3063
Restart Required: Yes
Instructions:
1. Update dlib to version 19.24.9 or later. 2. Recompile any applications using dlib. 3. Restart affected services.
🔧 Temporary Workarounds
Disable zlib functionality
allIf possible, disable or avoid using dlib's zlib compression/decompression features.
Input validation
allImplement strict input validation and size checking for any data processed through dlib's compression functions.
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable systems
- Deploy application firewalls to monitor and block suspicious compression-related traffic
🔍 How to Verify
Check if Vulnerable:
Check dlib version in your application dependencies or run: python -c "import dlib; print(dlib.__version__)" for Python bindingsCheck Version:
For Python: python -c "import dlib; print(dlib.__version__)" | For C++: check your build configuration or package managerVerify Fix Applied:
Verify dlib version is 19.24.9 or higher and recompile your application📡 Detection & Monitoring
Log Indicators:
- Application crashes with segmentation faults
- Memory access violation errors
- Unexpected process termination
Network Indicators:
- Unusual compression/decompression requests
- Malformed zlib data streams
SIEM Query:
Process termination with exit code indicating memory violation OR Application logs containing 'segmentation fault' or 'buffer overflow'