CVE-2021-26955 is a critical soundness violation in the xcb crate for Rust, affecting versions through 2021-02-04. The vulnerability arises from the `xcb::xproto::GetAtomNameReply::name()` function using `std::str::from_utf8_unchecked()` on unvalidated bytes received from an X server. With a CVSS score of 9.8 (Critical), this vulnerability is remotely exploitable with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2021-02-04CPE matchmatch criteria | cpe:2.3:a:xcb_project:xcb:*:*:*:*:*:rust:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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.