CVE-2026-107570 Use of Out-of-range Pointer Offset in mutt
An attacker can execute arbitrary code by sending a crafted email with a malicious Content-Type header to a user of the Mutt email client.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-107570?
CVE-2026-107570 is a low-severity memory corruption vulnerability in mutt, published on 8 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-823
Which versions are affected by CVE-2026-107570?
Linux distribution packages (17)
mutt SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 1.10.1-150000.3.32.1 |
mutt SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 1.10.1-150000.3.32.1 |
mutt SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 1.10.1-150000.3.32.1 |
mutt SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 1.10.1-150000.3.32.1 |
mutt SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 2.2.14-150600.3.9.1 |
mutt SUSE:Linux Enterprise Server 12 SP5-LTSS | All versions | 1.10.1-55.36.1 |
mutt SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 1.10.1-150000.3.32.1 |
mutt SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 1.10.1-150000.3.32.1 |
mutt SUSE:Linux Enterprise Server 15 SP6-LTSS | All versions | 2.2.14-150600.3.9.1 |
mutt SUSE:Linux Enterprise Server 16.0 | All versions | 2.2.16-160000.3.1 |
mutt SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 1.10.1-55.36.1 |
mutt SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 1.10.1-150000.3.32.1 |
mutt SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | All versions | 1.10.1-150000.3.32.1 |
mutt SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | All versions | 2.2.14-150600.3.9.1 |
mutt SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 2.2.16-160000.3.1 |
mutt openSUSE:Leap 16.0 | All versions | 2.2.16-160000.3.1 |
mutt openSUSE:Tumbleweed | All versions | 2.4.2-2.1 |
How do I fix CVE-2026-107570?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-107570 being exploited?
There is no known exploitation of CVE-2026-107570 in the wild and no public exploit code.
Sources
Also known as AZL-106736, CLSA-2026-1792092200, DEBIAN-CVE-2026-107570, GHSA-3756-2mxq-33pr, MGASA-2026-0517, OESA-2026-4644 and 10 more.