CVE-2021-33641 is a high-severity use-after-free vulnerability (CWE-416) affecting openeuler byacc, where incorrect memory access occurs during comment processing after memory has been freed. With a CVSS score of 7.8, this vulnerability can be exploited locally with low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.9.20200330CPE matchmatch criteria | cpe:2.3:a:openeuler:byacc:*:*:*:*:*:*:*:* | ||
>= 2.0, < 2.0.20210808CPE matchmatch criteria | cpe:2.3:a:openeuler:byacc:*:*:*:*:*:*:*:* |
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.