CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2021-26957
Critical (9.8) in xcb project xcb. EPSS 1.7% chance of exploitation in the next 30 days. Fixed in xcb 1.0.0.
An issue was discovered in the xcb crate through 2021-02-04 for Rust. It has a soundness violation because there is an out-of-bounds read in xcb::xproto::change_property(), as demonstrated by a format=32 T=u8 situation where out-of-bounds bytes are sent to an X server.
Severity
- EPSS
- 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
- CWE
- CWE-125
- Published
- Modified
- Record from
- the NVD, synced
Affected
- xcb_project:xcb
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-2xpg-3hx4-fm9r | crates.io | xcb | <1.0.0 | 1.0.0 |
| GHSA-3288-cwgw-ch86 | crates.io | xcb | <1.0.0 | 1.0.0 |
| GHSA-3cj3-jrrp-9rxf | crates.io | xcb | <1.0.0 | 1.0.0 |
| GHSA-mp6r-fgw2-rxfx | crates.io | xcb | <1.0.0 | 1.0.0 |
| RUSTSEC-2021-0019 | crates.io | xcb | >=0.0.0-0 <1.0.0 | 1.0.0 |