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CVE-2013-3945

20
FAUCET Score

CVE-2013-3945 describes a critical vulnerability in the MrSID plugin (MrSID.dll) for IrfanView, specifically versions prior to 4.37. This flaw allows remote attackers to execute arbitrary code on a user's system by exploiting a malformed nband tag within a MrSID image file. The vulnerability carries a high CVSS score of 7.8, indicating a significant risk due to its local attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability impacts. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, users of affected IrfanView versions should update their MrSID plugin immediately.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.37CPE matchmatch criteria
cpe:2.3:a:extensis:mrsid:*:*:*:*:*:irfanview:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.07%
Probability of exploitation in next 30 days
EPSS Percentile
79.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0207 is in the 79th percentile among its peer group of 11,616 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/89805
Third Party AdvisoryVDB Entry
irfanview.com / history_old.htm
Release Notes