CVE-2020-37167
criticalpriority · track · 0EPSS 0.002 · 9 %ileEURUEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.1–9.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (13)
External citations — patches, advisories, analysis.
- https://github.com/Cisco-Talos/clamav/commit/cd2f2975b93277de7f74464d48adb378375a305fcnnvd
- https://www.clamav.net/cnnvd
- https://www.exploit-db.com/exploits/47687cnnvd
- https://www.vulncheck.com/advisories/clamav-clambc-clambc-executable-regular-expressioncnnvd
- https://www.vulncheck.com/advisories/clamav-clambc-clambc-executable-regular-expression-errorcnnvd
- https://github.com/Cisco-Talos/clamav/commit/cd2f2975b93277de7f74464d48adb378375a305fenisa_euvd
- https://www.clamav.net/enisa_euvd
- https://www.exploit-db.com/exploits/47687enisa_euvd
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