CVE-2020-37167
ClamAV ClamBC < 0.103.0-rc - 'ClamBC' Executable Regular Expression Error
CVSS Score
8.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | clamav |
| Product | clambc |
| Published | Feb 12, 2026 |
| Last Updated | Apr 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
ClamAV / ClamBC
All versions affected References
exploit-db.com: https://www.exploit-db.com/exploits/47687 github.com: https://github.com/Cisco-Talos/clamav/commit/cd2f2975b93277de7f74464d48adb378375a305f clamav.net: https://www.clamav.net/ vulncheck.com: https://www.vulncheck.com/advisories/clamav-clambc-clambc-executable-regular-expression-error