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CVE-2005-3401

15
FAUCET Score

CVE-2005-3401 describes a multiple interpretation error in TheHacker 5.8.4.128, allowing remote attackers to bypass virus scanning. This vulnerability, dubbed the "magic byte bug," occurs when files like BAT, HTML, or EML contain an "MZ" magic byte sequence, typically associated with EXEs, leading the scanner to misclassify them as safe while they can still execute as dangerous types on the end system. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:P/A:N), it poses a moderate risk of partial integrity impact without requiring authentication. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
5.8.4.128CPE matchmatch criteria
cpe:2.3:a:thehacker:thehacker:5.8.4.128:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.65%
Probability of exploitation in next 30 days
EPSS Percentile
74.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0165 is in the 59th percentile among its peer group of 23,690 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
marc.info
securityreason.com / securityalert/114
securityreason.com / securityalert/122