CVE-2021-40656 is a high-severity buffer overflow vulnerability (CWE-787) affecting libsixel before version 1.10. This flaw, located in libsixel/src/quant.c:867, carries a CVSS score of 8.8, indicating a critical risk. It can be exploited remotely with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.10.0CPE matchmatch criteria | cpe:2.3:a:libsixel:libsixel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/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, 0.2 Bluesky, 0.1 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 0.1 Security Researcher mentions.
Remediation records are not available for this CVE.