CVE-2020-37167
ClamAV ClamBC < 0.103.0-rc - 'ClamBC' Executable Regular Expression Error
- State
- Published
- Severity
- 8.6 High
- Published
- Feb 12, 2026
- Updated
- Sep 30, 2026
- Reserved
- Feb 6, 2026
Description
ClamAV versions prior to 0.103.0-rc contain a vulnerability in function name processing through the ClamBC bytecode interpreter that allows attackers to manipulate bytecode function names. Attackers can exploit the weak input validation in function name encoding to potentially execute malicious bytecode or cause unexpected behavior in the ClamAV engine.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.4 High | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
ClamBCClamAV |
|
References
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