What is the CVSS score of CVE-2021-26958?

CVE-2021-26958 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.6%.

Is there a public PoC exploit available for CVE-2021-26958?

Yes, a public proof-of-concept exploit is available for CVE-2021-26958. Prioritise patching immediately. EPSS: 1.6%.

Is there a patch available for CVE-2021-26958?

Yes, a patch is available for CVE-2021-26958. Update the affected software to the latest version immediately.

Xcb CVE-2021-26958

HIGH

Unchecked Return Value (CWE-252)

2021-02-09 cve@mitre.org

Information Disclosure Xcb

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Feb 09, 2021 - 23:15 nvd

HIGH 8.8

DescriptionNVD

An issue was discovered in the xcb crate through 2021-02-04 for Rust. It has a soundness violation because transmutation to the wrong type can happen after xcb::base::cast_event uses std::mem::transmute to return a reference to an arbitrary type.

AnalysisAI

An issue was discovered in the xcb crate through 2021-02-04 for Rust. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-252. An issue was discovered in the xcb crate through 2021-02-04 for Rust. It has a soundness violation because transmutation to the wrong type can happen after xcb::base::cast_event uses std::mem::transmute to return a reference to an arbitrary type. Affected products include: Xcb Project Xcb. Version information: through 2021.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.