How severe is CVE-2021-28848?

CVE-2021-28848 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-28848 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28848?

CVE-2021-28848 affects Mintty Project Mintty. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28848?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-28848 published?

CVE-2021-28848 was published on 2021-06-03 and last updated on 2026-06-17.

CVE-2021-28848

CVE-2021-28848 is a high-severity vulnerability in Mintty Project Mintty with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Mintty Project Mintty
Published: 2021-06-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-28848?: CVE-2021-28848 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-28848 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28848?: CVE-2021-28848 affects Mintty Project Mintty. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28848?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-28848 published?: CVE-2021-28848 was published on 2021-06-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mintty_project:mintty:*:*:*:*:*:*:*:*

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