CVE-2026-24822
📋 TL;DR
This CVE describes a heap-based buffer overflow vulnerability in the wxhelper software's mongoose.C module, allowing attackers to write data beyond allocated memory boundaries. The vulnerability affects all wxhelper versions through 3.9.10.19-v1 and could lead to arbitrary code execution or application crashes.
💻 Affected Systems
- ttttupup wxhelper
⚠️ 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 same privileges as the wxhelper 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 with no further impact if proper memory protections (ASLR, DEP) are enabled.
🎯 Exploit Status
Heap-based buffer overflows typically require specific memory layout conditions to exploit reliably.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 3.9.10.19-v1
Vendor Advisory: https://github.com/ttttupup/wxhelper/pull/515
Restart Required: Yes
Instructions:
1. Update wxhelper to version after 3.9.10.19-v1. 2. Restart the wxhelper service/application. 3. Verify the update was successful.
🔧 Temporary Workarounds
Disable mongoose.C module
allIf wxhelper functionality allows, disable or remove the mongoose.C module to eliminate the attack surface.
Check wxhelper configuration for mongoose.C module settings
Network segmentation
allRestrict network access to wxhelper services to trusted sources only.
Configure firewall rules to limit inbound connections to wxhelper
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all data processed by wxhelper.
- Deploy memory protection mechanisms (ASLR, DEP, stack canaries) and monitor for crash events.
🔍 How to Verify
Check if Vulnerable:
Check wxhelper version: if version is 3.9.10.19-v1 or earlier, the system is vulnerable.Check Version:
wxhelper --version or check application metadataVerify Fix Applied:
Verify wxhelper version is after 3.9.10.19-v1 and check that the mongoose.C module has been updated.📡 Detection & Monitoring
Log Indicators:
- Application crashes, memory access violation errors, abnormal termination of wxhelper process
Network Indicators:
- Unusual network traffic patterns to wxhelper ports, especially large or malformed HTTP requests
SIEM Query:
Process:Name="wxhelper" AND (EventID=1000 OR EventID=1001) OR Network:DestinationPort="[wxhelper_port]" AND PayloadSize>threshold