CVE-2008-5531

CRITICAL 9.3CVE-2008-5531 · Published 12/12/2008 · updated 16/06/2026

In short

CVE-2008-5531 is a CRITICAL (CVSS 9.3) vulnerability affecting fortiguard antivirus (fortinet).
Chance of exploitation in the next 30 days (EPSS): 3.0%, higher than 87.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
fortiguard antivirus fortinet	`= 3.113.0.0`	No fix yet

Description

Fortinet Antivirus 3.113.0.0, when Internet Explorer 6 or 7 is used, allows remote attackers to bypass detection of malware in an HTML document by placing an MZ header (aka "EXE info") at the beginning, and modifying the filename to have (1) no extension, (2) a .txt extension, or (3) a .jpg extension, as demonstrated by a document containing a CVE-2006-5745 exploit.

References

securityreason.com/securityalert/4723
securityfocus.com/archive/1/498995/100/0/threaded
securityfocus.com/archive/1/499043/100/0/threaded
exchange.xforce.ibmcloud.com/vulnerabilities/47435

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