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

Q: How do I fix CVE-2025-1052?

mintty: upgrade to 3.7.5. Exact commands for each OS are on this page.

Q: Is CVE-2025-1052 being exploited?

CVE-2025-1052 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-1052 affect?

CVE-2025-1052 affects mintty. Severity is high (CVSS 8.8). 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 thi

This month

HIGH 8.8UPGRADE

CVE-2025-1052 is a high-severity flaw (CVSS 8.8) affecting mintty. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-122, CWE-787
Published	2025-02-11
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: mintty project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-11 20:15 UTCPublished CVE record published
2026-06-17 08:38 UTCUpdated Record last modified

mintty project mintty UPGRADE

Affected: < 3.7.5

Fixed in: 3.7.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mintty || rpm -q mintty || mintty --version

2. UPGRADE to 3.7.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mintty

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mintty

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-1052?

mintty: upgrade to 3.7.5. Exact commands for each OS are on this page.

Is CVE-2025-1052 being exploited?

CVE-2025-1052 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-1052 affect?

CVE-2025-1052 affects mintty. Severity is high (CVSS 8.8). 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 thi

How urgent is CVE-2025-1052?

Priority 46/100. High severity

References

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