CVE-2012-1458
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…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Timeline
ID reserved
By mitre
- 21 days later
· 21 days later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 72.9% · top 0.5% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
n/a
- affected n/a
References (8)
- openSUSE-SU-2012:0833 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 20120319 Evasion attacks expoliting file-parsing vulnerabilities in antivirus products (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 52611 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 80473 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- http://www.ieee-security.org/TC/SP2012/program.html (opens in a new tab)x_refsource_MISCx_transferred
- multiple-av-chm-header-evasion(74301) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 80474 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- MDVSA-2012:094 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-1458)Record last updated .