Vulnerability · Published Feb 11, 2025 · Assigned by zdi

CVE-2025-1052Mintty Sixel Image Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

High 8.8

In plain English

A high-severity heap buffer overflow in Mintty from Mintty. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).

Severity (CVSS 3.0)8.8High

Exploit odds (30 days)1.0%top 37.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Mintty Sixel Image Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Mintty. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of sixel images. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-23382.

Affected products (as reported)

Vendor	Product	Versions
Mintty	Mintty	3.7.1 (Git-2.45.1-64-bit.exe)

Weakness: CWE-122 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

ZDI-25-084 x_research-advisory