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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mutt | 2.0.5-4.1 | — |
| Debian 14 | neomutt | 20201127+dfsg.1-1.2 | — |
| Debian 13 | mutt | 2.0.5-4.1 | — |
| Debian 13 | neomutt | 20201127+dfsg.1-1.2 | — |
| Debian 12 | mutt | 2.0.5-4.1 | — |
| Debian 12 | neomutt | 20201127+dfsg.1-1.2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | mutt | 2.1.4-1ubuntu1.1 | USN-5392-1 |
| Ubuntu 20.04 LTS | mutt | 1.13.2-1ubuntu0.5 | USN-5392-1 |
| Ubuntu 18.04 LTS | mutt | 1.9.4-3ubuntu0.6 | USN-5392-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | neomutt | 20231103+dfsg1-1ubuntu0.1~esm1 | USN-7204-1 |
| Ubuntu Pro 22.04 LTS | neomutt | 20211029+dfsg1-1ubuntu0.1~esm1 | USN-7204-1 |
| Ubuntu Pro 20.04 LTS | neomutt | 20191207+dfsg.1-1.1ubuntu0.1~esm1 | USN-7204-1 |
| Ubuntu Pro 18.04 LTS | neomutt | 20171215+dfsg.1-1ubuntu0.1~esm1 | USN-7204-1 |
| Ubuntu Pro 16.04 LTS | mutt | 1.5.24-1ubuntu0.6+esm2 | USN-5392-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP4 | neomutt | 20220429-bp154.2.3.1 | openSUSE-SU-2022:10020-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mutt | 2.0.7-2.2 | openSUSE-SU-2024:11069-1 |
| openSUSE Tumbleweed | neomutt | 20211029-1.1 | openSUSE-SU-2024:11719-1 |
| openSUSE Leap 15.4 | neomutt | 20220429-bp154.2.3.1 | openSUSE-SU-2022:10020-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | neomutt | 20211015-r0 | — |
| Alpine v3.23 | neomutt | 20211015-r0 | — |
| Alpine v3.22 | neomutt | 20211015-r0 | — |
| Alpine v3.21 | neomutt | 20211015-r0 | — |
| Alpine v3.20 | neomutt | 20211015-r0 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | neomutt | 20211015-r0 | — |
| Alpine v3.18 | neomutt | 20211015-r0 | — |
| Alpine v3.17 | neomutt | 20211015-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | mutt | 2.0.5-4 | — |
Advisories 6
- USN-5392-1 mutt vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-7204-1 neomutt vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2022:10020-1 Security update for neomutt SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11069-1 mutt-2.0.7-2.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11719-1 neomutt-20211029-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2025-0101 mutt: Schwachstelle ermöglicht nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jan 15, 2025