CVE-2026-107570
Publication date 12 October 2026
Last updated 13 October 2026
Ubuntu priority
Description
heap OOB write in convert_file_from_to() via a crafted Content-Type header allows attacker to OOB write when email is used as a template.
Why is this CVE medium priority?
Heap out-of-bounds write in mutt requires a user to use a crafted email as a template, so exploitation needs local interaction and is not remotely reachable by default in Ubuntu deployments.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| mutt | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release |
Severity score breakdown
CVSS version: CVSS v3.0
Base score
2.5 · Low
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-107570
- gitlab.com/muttmua/mutt
- github.com/cveproject/cvelistv5/tree/main/cves/2026/107xxx/cve-2026-107570.json
- gitlab.com/muttmua/mutt/-/work_items/533
- nvd.nist.gov/vuln/detail/cve-2026-107570
- gitlab.com/muttmua/mutt/-/commit/7752d93f26f8f1384905fad874afff5abb0f3e54
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1150407
- security-tracker.debian.org/tracker/cve-2026-107570
- www.openwall.com/lists/oss-security/2026/10/09/21