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The Microsoft CHM file parser in ClamAV 0.96.4 and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via a crafted reset interval in the LZXC header of a CHM file. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different CHM parser implementations.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade clamav | Jul 30, 2024 | Mar 21, 2012 |
| Freebsd | — | Upgrade clamav-develUpgrade clamav | Dec 10, 2025 | Jun 16, 2012 |
| Suse | — | Upgrade clamav-develUpgrade libfreshclam4Upgrade clamav-milterUpgrade clamav-docs-htmlUpgrade libclammspack0Upgrade libclamav12Upgrade clamavUpgrade libfreshclam3Upgrade libclamav7 | Feb 17, 2015 | Jun 28, 2013 |
| Ubuntu | — | Upgrade clamavUpgrade libclamav6Upgrade clamav-daemon | Nov 8, 2024 | Mar 21, 2012 |
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