Is CVE-2021-28032 in the CISA KEV catalog?

No. CVE-2021-28032 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28032?

CVE-2021-28032 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-28032?

CVE-2021-28032 has an EPSS score of 1.38% (69th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28032?

Upgrade nano arena to 0.5.2 or later.

CVE & CISA-KEV Catalog

CVE-2021-28032

CRITICAL

9.8

CVSS v3

NVD

Description

An issue was discovered in the nano_arena crate before 0.5.2 for Rust. There is an aliasing violation in split_at because two mutable references can exist for the same element, if Borrow<Idx> behaves in certain ways. This can have a resultant out-of-bounds write or use-after-free.

How to fix

Remediation Available

nano arenaNVD

Affected:< 0.5.2Fixed in:0.5.2CVE-2021-28032derived from NVD

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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.38%probability of exploitation in 30 days

69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Patch1

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.