CVE-2020-11958
HIGHCVSS 7.8/10EPSS 1.66%
Last modified
CVE-2020-11958 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. re2c 1.3 has a heap-based buffer overflow in Scanner::fill in parse/scanner.cc via a long lexeme.. EPSS estimates a 1.66% chance of exploitation in the next 30 days.
Description
re2c 1.3 has a heap-based buffer overflow in Scanner::fill in parse/scanner.cc via a long lexeme.
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 |
|---|---|---|
| Re2c | Re2c | 1.3 |
| Canonical | Ubuntu Linux | 19.10 |
| Canonical | Ubuntu Linux | 20.04 |
References
- http://www.openwall.com/lists/oss-security/2020/04/21/1Mailing List, Third Party Advisory
- https://github.com/skvadrik/re2c/commit/c4603ba5ce229db83a2a4fb93e6d4b4e3ec3776aPatch, Third Party Advisory
- https://security.gentoo.org/glsa/202007-28Third Party Advisory
- https://usn.ubuntu.com/4338-1/Third Party Advisory
- https://usn.ubuntu.com/4338-2/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/04/19/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/04/21/1Mailing List, Third Party Advisory
- https://github.com/skvadrik/re2c/commit/c4603ba5ce229db83a2a4fb93e6d4b4e3ec3776aPatch, Third Party Advisory
- https://security.gentoo.org/glsa/202007-28Third Party Advisory
- https://usn.ubuntu.com/4338-1/Third Party Advisory
- https://usn.ubuntu.com/4338-2/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2020/04/19/1Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-11958?
re2c 1.3 has a heap-based buffer overflow in Scanner::fill in parse/scanner.cc via a long lexeme.
How severe is CVE-2020-11958?
CVE-2020-11958 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.66% probability of exploitation in the next 30 days.
How do I fix CVE-2020-11958?
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-2020-11958?
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Scan your code nowSource: NVD / NIST