Buffer overflow in Mintty
CVE-2025-1052
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (60.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Mintty — versions 3.7.1 (Git-2.45.1-64-bit.exe)
- Mintty Project
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-25-084/ (x_research-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-1052?
- CVE-2025-1052 is a high-severity vulnerability in Mintty, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-02-11.
- How severe is CVE-2025-1052?
- High severity. CVSS v3 base score is 8.8 out of 10.