What’s Vulnerable › Vulnerabilities

CVE-2026-107570: Use of Out-of-range Pointer Offset in mutt

• Severity: low (CVSS 2.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-08 · updated 2026-10-10
• Weakness: CWE-823

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.

Affected products

• mutt: through 2.4.2

References

• https://gitlab.com/muttmua/mutt/-/work_items/533
• http://www.openwall.com/lists/oss-security/2026/10/09/21

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