CVE-2025-48386
📋 TL;DR
This CVE describes a buffer overflow vulnerability in Git's wincred credential helper on Windows systems. The helper uses a static buffer without proper bounds checking when appending data, potentially allowing attackers to execute arbitrary code or crash Git processes. This affects Windows users running vulnerable Git versions with the wincred credential helper enabled.
💻 Affected Systems
- Git
⚠️ 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 leading to complete system compromise, credential theft, or lateral movement within the network.
Likely Case
Application crash (denial of service) or limited memory corruption that could be leveraged for information disclosure.
If Mitigated
No impact if patched versions are used or if wincred helper is disabled on affected systems.
🎯 Exploit Status
Exploitation requires triggering the wincred helper with specially crafted input, likely through Git operations. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.43.7, v2.44.4, v2.45.4, v2.46.4, v2.47.3, v2.48.2, v2.49.1, or v2.50.1
Vendor Advisory: https://github.com/git/git/security/advisories/GHSA-4v56-3xvj-xvfr
Restart Required: No
Instructions:
1. Download latest patched Git version from https://git-scm.com/download/win 2. Run installer 3. Verify installation with 'git --version'
🔧 Temporary Workarounds
Disable wincred credential helper
windowsSwitch to a different credential helper or disable credential caching
git config --global --unset credential.helper
git config --global credential.helper ""
Use alternative credential helper
windowsConfigure Git to use manager-core or other credential helpers
git config --global credential.helper manager-core
🧯 If You Can't Patch
- Disable wincred credential helper globally using git config commands
- Restrict Git operations to trusted repositories only and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Run 'git --version' and check if version is below patched versions listed in advisoryCheck Version:
git --versionVerify Fix Applied:
Run 'git --version' and confirm version is v2.43.7, v2.44.4, v2.45.4, v2.46.4, v2.47.3, v2.48.2, v2.49.1, or v2.50.1 or higher📡 Detection & Monitoring
Log Indicators:
- Unexpected Git process crashes
- Abnormal memory usage in Git processes
- Failed credential helper operations
Network Indicators:
- Unusual Git protocol traffic patterns
- Connections to unexpected Git repositories
SIEM Query:
Process:git.exe AND (EventID:1000 OR EventID:1001) OR Process:git.exe AND MemoryUsage > [threshold]