CVE-2021-40647 describes a heap overflow vulnerability in man2html version 1.6g, where a specially crafted input file can overwrite the heap's top chunk size parameter. This can lead to a denial of service through a segmentation fault, or, in older GLIBC versions (before 2.29), enable arbitrary memory writes. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and primarily impacting availability. There is currently no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage, suggesting a low immediate threat.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.6gCPE matchmatch criteria | cpe:2.3:a:man2html_project:man2html:1.6g:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.