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Servers and applications

CVE-2008-5525

ClamAV 0.94.1 and possibly 0.93.1, 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.

Severity
High 9.3
Published
12 Dec 2008
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
2.9% in the next 30 daysHigher than 87% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Improper input validation (CWE-20)
Attack
Over the network · No login needed
Attacker can
Read data · Change data · Take it down
CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C
Sources
NVD

Affected software

SoftwareAffected versions
ClamAVServers and applications · cpe:a:clamav:clamav
  • Version 0.93.1
  • Version 0.94.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2008-5525
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2008-5525