CVE-2021-33453
HIGHCVSS 7.8/10EPSS 0.34%
Last modified
CVE-2021-33453 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An issue was discovered in lrzip version 0.641. There is a use-after-free in ucompthread() in stream.c:1538.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
Description
An issue was discovered in lrzip version 0.641. There is a use-after-free in ucompthread() in stream.c:1538.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Long Range Zip Project | Long Range Zip | 0.641 |
References
- https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6dExploit, Third Party Advisory
- https://github.com/ckolivas/lrzip/issues/199Exploit, Issue Tracking, Third Party Advisory
- https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6dExploit, Third Party Advisory
- https://github.com/ckolivas/lrzip/issues/199Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-33453?
An issue was discovered in lrzip version 0.641. There is a use-after-free in ucompthread() in stream.c:1538.
How severe is CVE-2021-33453?
CVE-2021-33453 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33453?
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.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-33453?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST