CVE-2025-54873

CVE-2025-54873 is a unknown severity vulnerability affecting the affected product.

Description: RISC Zero is a zero-knowledge verifiable general computing platform based on zk-STARKs and the RISC-V microarchitecture. RISC packages risc0-zkvm versions 2.0.0 through 2.1.0 and risc0-circuit-rv32im and risc0-circuit-rv32im-sys versions 2.0.0 through 2.0.4 contain vulnerabilities where signed integer division allows multiple outputs for certain inputs with only one being valid, and division by zero results are underconstrained. […]

Affected Versions:
❌ Vulnerable: 2.0.0 - 2.1.0
✅ Safe: ≥ 2.1.1

Exploit Difficulty: HARD
⏱️ Time to exploit: > 4 hours
🛠️ Required skills: Advanced security expertise
💰 Public exploits: Rare or not public

How to Fix:


- Check if you're running the affected product
- Verify version (vulnerable: 2.0.0 - 2.1.0)


- Update to ≥ 2.1.1 or later
- If patching is not immediately possible: restrict network exposure, apply least-privilege access


- Test the fix in a staging environment first
- Review logs for signs of exploitation
- Monitor for IOCs (Indicators of Compromise)


- Enable automatic security updates
- Set up vulnerability monitoring
- Review and harden security configurations