CVE-2021-32055
neomutt: Out of bounds read in IMAP parser
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 5, 2021
Updated · November 22, 2025
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.
Statement
This flaw doesn't affect the Mutt versions shipped with Red Hat Enterprise Linux 6, 7 and 8 as it depends on QRESYNC feature included on newer versions of Mutt than the ones distributed by Red Hat.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer