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CVE-2012-1458

The Microsoft CHM file parser in ClamAV 0.96.4 and Sophos Anti-Virus 4.61.0 allows remote...

4.3 MediumFix available

CVE-2012-1458 is a medium vulnerability (CVSS 4.3) in Clamav, published March 21, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 73.0%, the 99th percentile. Fixed in clamav 0.97.5+dfsg-1.

What does this mean?
Severity
4.3 MediumCVSS 2.0, NVD
Exploit chance
73.0%EPSS, 99th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
0.97.5+dfsg-1clamav +3 more

Description

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.

Exploit likelihood

73.0%Up 71.5 points since Feb 4, 2022
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
clamav
Debian:12
before 0.97.5+dfsg-1
0.97.5+dfsg-1
clamav
Debian:13
before 0.97.5+dfsg-1
0.97.5+dfsg-1
clamav
Debian:14
before 0.97.5+dfsg-1
0.97.5+dfsg-1
clamav
openSUSE:Tumbleweed
From an advisory covering 16 CVEs
before 0.99.2-4.1
0.99.2-4.1

What each source reports

NVD Score used4.3

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.

Record
CVE-2012-1458
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-264
Updated
2026-11-02
CVE ListNo score

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.

Record
CVE-2012-1458
Updated
2026-11-02
EUVDEUVD-2012-1479No score

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.

Record
EUVD-2012-1479
Updated
2026-11-03
GitHub AdvisoriesGHSA-x2x7-346g-h5gvNo score

The Microsoft CHM file parser in ClamAV 0.96.4 and Sophos Anti-Virus 4.61.0 allows remote...

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.

Record
GHSA-x2x7-346g-h5gv
Updated
2026-11-02
OSVNo score

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.

Record
CVE-2012-1458
Updated
2026-11-02
OSVDEBIAN-CVE-2012-1458No score

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.

Record
DEBIAN-CVE-2012-1458
Updated
2026-11-02
OSVopenSUSE-SU-2024:10571-1No score

clamav-0.99.2-4.1 on GA media

These are all security issues fixed in the clamav-0.99.2-4.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10571-1
Updated
2026-11-02

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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