CVE-2021-32055

CRITICAL
9.1
CVSS Score
Published: May 5, 2021 at 03:06 PM UTC
Updated: June 17, 2026 at 03:52 AM UTC
2 products affected across 2 vendorsMuttNeomutt

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Severity
CRITICAL9.1
Exploit prediction
EPSS 3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.11.0 ≤ v < 2.0.7
Affected range stops below 2.0.7, so it looks safe — our inference, not a vendor statement
20191025 ≤ v ≤ 20210504

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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