What is CVE-2021-28848?

CVE-2021-28848 is a high-severity vulnerability in Mintty Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2021-06-03.

How severe is CVE-2021-28848?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Mintty Project

CVE-2021-28848

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.

Published 2021-06-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Mintty Project

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

mintty.github.io/ (Vendor Advisory)
github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9 (Patch, Third Party Advisory)
github.com/mintty/mintty/compare/3.4.4...3.4.5 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-28848?: CVE-2021-28848 is a high-severity vulnerability in Mintty Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2021-06-03.
How severe is CVE-2021-28848?: High severity. CVSS v3 base score is 7.5 out of 10.