Is CVE-2021-32055 in the CISA KEV catalog?

No. CVE-2021-32055 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-32055?

CVE-2021-32055 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2021-32055?

CVE-2021-32055 has an EPSS score of 2.55% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-32055?

Upgrade mutt on debian 11 to 2.0.5-4.1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-32055

CRITICALEPSS 83th pctl

9.1

CVSS v3

NVD

Description

Mutt 1.11.0 through 2.0.x before 2.0.7 (and NeoMutt 2019-10-25 through 2021-05-04) has a $imap_qresync issue in which imap/util.c has an out-of-bounds read in situations where an IMAP sequence set ends with a comma. NOTE: the $imap_qresync setting for QRESYNC is not enabled by default.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

muttDebian

Fixed in:2.0.5-4.1CVE-2021-32055

muttUbuntu

Fixed in:1.5.24-1ubuntu0.6+esm2USN-5392-1

Fixed in:1.9.4-3ubuntu0.6USN-5392-1

Fixed in:1.13.2-1ubuntu0.5USN-5392-1

Fixed in:2.1.4-1ubuntu1.1USN-5392-1

mutt-patchedUbuntu

Fixed in:1.5.24-1ubuntu0.6+esm2USN-5392-1

neomuttUbuntu

Fixed in:20171215+dfsg.1-1ubuntu0.1~esm1USN-7204-1

Fixed in:20191207+dfsg.1-1.1ubuntu0.1~esm1USN-7204-1

Fixed in:20211029+dfsg1-1ubuntu0.1~esm1USN-7204-1

Fixed in:20231103+dfsg1-1ubuntu0.1~esm1USN-7204-1

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

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.55%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch2

Vendor Advisory1

lists.mutt.org

Third-Party Advisory1

security.gentoo.org

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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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.