Is CVE-2021-26958 in the CISA KEV catalog?

No. CVE-2021-26958 is not currently on the CISA Known Exploited Vulnerabilities list.

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

CVE-2021-26958 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-26958?

CVE-2021-26958 has an EPSS score of 1.60% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-26958?

Upgrade rust-xcb on debian 12 to 1.1.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-26958

HIGHEPSS 73th pctl

8.8

CVSS v3

NVD

Description

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.

CWE-252

How to fix

Remediation Available

rust-xcbDebian

Fixed in:1.1.1-1CVE-2021-26958

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.60%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Exploit1

rustsec.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.