What’s Vulnerable › Vulnerabilities
CVE-2020-11958
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-04-21 · updated 2026-06-17
- Weakness: CWE-787
Description
re2c 1.3 has a heap-based buffer overflow in Scanner::fill in parse/scanner.cc via a long lexeme.
Affected products
- Canonical Ubuntu Linux: 19.10, 20.04
- Re2C: 1.3
References
- http://www.openwall.com/lists/oss-security/2020/04/21/1
- https://blogs.gentoo.org/ago/2020/04/19/re2c-heap-overflow-in-scannerfill-scanner-cc/
- https://github.com/skvadrik/re2c/commit/c4603ba5ce229db83a2a4fb93e6d4b4e3ec3776a
- https://security.gentoo.org/glsa/202007-28
- https://usn.ubuntu.com/4338-1/
- https://usn.ubuntu.com/4338-2/
- https://www.openwall.com/lists/oss-security/2020/04/19/1
- http://www.openwall.com/lists/oss-security/2020/04/21/1
- https://blogs.gentoo.org/ago/2020/04/19/re2c-heap-overflow-in-scannerfill-scanner-cc/
- https://github.com/skvadrik/re2c/commit/c4603ba5ce229db83a2a4fb93e6d4b4e3ec3776a
- https://security.gentoo.org/glsa/202007-28
- https://usn.ubuntu.com/4338-1/
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