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CVE-2021-29366

25
FAUCET Score

CVE-2021-29366 describes a buffer overflow vulnerability in Irfanview 4.57, specifically within the FORMATS!GetPlugInInfo+0x2de9 function, which can be triggered by a specially crafted RLE file. This high-severity flaw (CVSS 7.8) allows an attacker to execute arbitrary code on an affected system, requiring user interaction (e.g., opening the malicious file) and local access. While the vulnerability poses a significant risk for compromise, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or notable community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.57CPE matchmatch criteria
cpe:2.3:a:irfanview:irfanview:4.57:*:*:*:*:*:*:*

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
0.98%
Probability of exploitation in next 30 days
EPSS Percentile
58.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0098 is in the 55th percentile among its peer group of 11,621 CVEs.

Social Chatter

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

github.com / moshekaplan/Research/tree/main/IrfanView
Third Party Advisory