CVE-2020-23921

high

Description

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

References

https://github.com/Samuel-Tyler/fast_ber/issues/30

https://cwe.mitre.org/data/definitions/126.html

Details

Source: Mitre, NVD

Published: 2021-04-21

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Severity: High

EPSS

EPSS: 0.0025