CVE-2025-1864
📋 TL;DR
CVE-2025-1864 is a memory buffer overflow vulnerability in radare2, a reverse engineering framework. Attackers can exploit this to execute arbitrary code or cause denial of service. Users running radare2 versions before 5.9.9 are affected.
💻 Affected Systems
- radareorg radare2
📦 What is this software?
Radare2 by Radare
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the radare2 process, potentially leading to complete system compromise.
Likely Case
Application crash (denial of service) or limited code execution within the radare2 process context.
If Mitigated
If radare2 runs with minimal privileges (non-root, sandboxed), impact is limited to the application environment.
🎯 Exploit Status
Exploitation requires feeding a specially crafted binary file to radare2. No authentication needed if user can supply input files.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.9.9
Vendor Advisory: https://github.com/radareorg/radare2/pull/23981
Restart Required: No
Instructions:
1. Update radare2 to version 5.9.9 or later. 2. For package managers: 'sudo apt update && sudo apt upgrade radare2' (Debian/Ubuntu) or 'brew upgrade radare2' (macOS). 3. For source: git pull from repository and rebuild.
🔧 Temporary Workarounds
Restrict file analysis
allOnly analyze trusted binary files with radare2 until patched.
Run with reduced privileges
linuxExecute radare2 as non-root user with limited permissions.
sudo -u lowprivuser radare2 [file]
🧯 If You Can't Patch
- Isolate radare2 usage to dedicated, non-critical systems
- Implement strict file validation before feeding binaries to radare2
🔍 How to Verify
Check if Vulnerable:
Run 'r2 -v' and check if version is below 5.9.9Check Version:
r2 -v | grep versionVerify Fix Applied:
Confirm version is 5.9.9 or higher with 'r2 -v'📡 Detection & Monitoring
Log Indicators:
- Radare2 process crashes
- Segmentation fault errors in system logs
Network Indicators:
- Unusual outbound connections from radare2 process (if exploited for C2)
SIEM Query:
process_name:"radare2" AND (event_type:"crash" OR exit_code:139)