CVE-2012-1458

4.3 MEDIUM 73% exploit odds No fix listed Other

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 72.9% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2012-03-21 10:11 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:39 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 72.9% in the next 30 days (EPSS).
Severity: 4.3 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2012-03-21 10:11 UTC
Last modified: 2026-06-16 23:39 UTC
Exploit probability: 72.9% · EPSS, next 30 days
Weakness: CWE-264
Record status: Modified

Affected

Clamav 0.96.4
Sophos anti-virus 4.61.0

Attack profile CVSS 2.0 · 4.3

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: Partial
Availability: None

Raw vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2012-1458.md and follow it. Check whether this project is affected by CVE-2012-1458. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record