CVE-2021-28848

Name: CVE-2021-28848
Creator: NVD / NIST
Published: 2021-06-03T12:15:07.757+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.64%

Last modified Jun 17, 2026

CVE-2021-28848 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Mintty before 3.4.5 allows remote servers to cause a denial of service (Windows GUI hang) by telling the Mintty window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. In other words, it does not implement a usleep or similar delay upon processing a title change.. EPSS estimates a 1.64% chance of exploitation in the next 30 days.

Description

Mintty before 3.4.5 allows remote servers to cause a denial of service (Windows GUI hang) by telling the Mintty window to change its title repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls. In other words, it does not implement a usleep or similar delay upon processing a title change.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.64%

73.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-770

Affected Software

Vendor	Product	Versions
Mintty Project	Mintty	< 3.4.5

References

https://github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9Patch, Third Party Advisory
https://github.com/mintty/mintty/compare/3.4.4...3.4.5Patch, Third Party Advisory
https://mintty.github.io/Vendor Advisory
https://github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9Patch, Third Party Advisory
https://github.com/mintty/mintty/compare/3.4.4...3.4.5Patch, Third Party Advisory
https://mintty.github.io/Vendor Advisory

Timeline

Published: Jun 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28848?

How severe is CVE-2021-28848?

CVE-2021-28848 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.64% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28848?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-28848?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST