What’s Vulnerable › Vulnerabilities

CVE-2020-23921

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-21 · updated 2026-06-17
• Weakness: CWE-125

Description

An issue was discovered in fast_ber through v0.4. yy::yylex() in asn_compiler.hpp has a heap-based buffer over-read.

Affected products

• Fast Ber Project Fast Ber: through 0.4

References

• https://cwe.mitre.org/data/definitions/126.html
• https://github.com/Samuel-Tyler/fast_ber/issues/30
• https://cwe.mitre.org/data/definitions/126.html
• https://github.com/Samuel-Tyler/fast_ber/issues/30

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