Multiple interpretation error in (1) McAfee Internet Security Suite 7.1.5 version 9.1.08…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Multiple interpretation error in (1) McAfee Internet Security Suite 7.1.5 version 9.1.08 with the 4.4.00 engine and (2) McAfee Corporate 8.0.0 patch 10 with the 4400 engine allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an "MZ" magic byte sequence which is normally associated with EXE, which causes the file to be treated as a safe type that could still be executed as a dangerous file type by applications on the end system, as demonstrated by a "triple headed" program that contains EXE, EML, and HTML content, aka the "magic byte bug."
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-3377
- 2026-10-03 Alias added: GHSA-xr84-wvr6-x336
References
More McAfee Internet Security Suite vulnerabilities
- TI-2006-03837 Buffer overflow in McSubMgr ActiveX control (mcsubmgr.dll) in McAfee Security Center… CVSS 2.0MEDIUM 6.8
- TI-2009-01282 The AV engine before DAT 5600 in McAfee VirusScan, Total Protection, Internet Security… CVSS 2.0HIGH 7.6
- TI-2005-01045 McAfee Internet Security Suite 2005 uses insecure default ACLs for installed files, which… CVSS 2.0HIGH 7.2
- TI-2006-05229 McAfee Network Agent (mcnasvc.exe) 1.0.178.0, as used by multiple McAfee products… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2005-3377 · CVE Program
- CVE-2005-3377 · NVD
- FIRST EPSS
- GHSA-xr84-wvr6-x336 · GitHub Advisory Database · CC BY 4.0
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