CVE-2021-32495
CRITICALCVSS 9.1/10EPSS 0.64%
Last modified
CVE-2021-32495 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory afterwards. EPSS estimates a 0.64% chance of exploitation in the next 30 days.
Description
Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory afterwards. This will allow attackers to cause denial of service.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Radare | Radare2 | 5.3.0 |
References
- https://github.com/radareorg/radare2/commit/5e16e2d1c9fe245e4c17005d779fde91ec0b9c05Patch, Vendor Advisory
- https://github.com/radareorg/radare2/issues/18666Issue Tracking, Patch, Vendor Advisory
- https://github.com/radareorg/radare2/commit/5e16e2d1c9fe245e4c17005d779fde91ec0b9c05Patch, Vendor Advisory
- https://github.com/radareorg/radare2/issues/18666Issue Tracking, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-32495?
Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory afterwards. This will allow attackers to cause denial of service.
How severe is CVE-2021-32495?
CVE-2021-32495 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.
How do I fix CVE-2021-32495?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2021-32495?
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Scan your code nowSource: NVD / NIST