Low severity · published Oct 8, 2026
CVE-2026-107570
Use of Out-of-range Pointer Offset in mutt
2.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack vector
Local
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MU
mutt · mutt
through 2.4.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107570
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107570
gitlab.com
https://gitlab.com/muttmua/mutt/-/work_items/533
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