CVE-2021-26957
CRITICAL
9.8
CVSS Score
Published: February 9, 2021 at 10:07 PM UTC
Updated: June 17, 2026 at 03:44 AM UTC
1 product affected across 1 vendorXcb
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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Xcb· Xcb Projectcargo
95%v ≤ 2021-02-04
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCExploitVendor Advisory
Source: [email protected]
https://rustsec.org/advisories/RUSTSEC-2021-0019.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125
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