CVE-2021-3404 is a heap buffer overflow vulnerability in ytnef 1.9.3, specifically within the SwapWord function in lib/ytnef.c. This flaw allows remote attackers to trigger a denial-of-service and potentially achieve code execution through a specially crafted file, affecting various Fedora and Red Hat Enterprise Linux distributions. Rated with a CVSS score of 7.8 (High), the vulnerability requires user interaction (UI:R) to open the malicious file, but has low attack complexity (AC:L) and no authentication required (PR:N). There is currently no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.9.3CPE matchmatch criteria | cpe:2.3:a:ytnef_project:ytnef:1.9.3:*:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
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 records are not available for this CVE.