How severe is CVE-2021-31701?

CVE-2021-31701 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 high, and availability none.

Is CVE-2021-31701 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31701?

CVE-2021-31701 affects Mintty Project Mintty. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31701?

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-2021-31701 published?

CVE-2021-31701 was published on 2021-06-06 and last updated on 2026-06-17.

CVE-2021-31701

CVE-2021-31701 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-755.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Mintty Project Mintty
Published: 2021-06-06
Last modified: 2026-06-17

Description

Mintty before 3.4.7 mishandles Bracketed Paste Mode.

Frequently asked questions

What is CVE-2021-31701?: Mintty before 3.4.7 mishandles Bracketed Paste Mode.
How severe is CVE-2021-31701?: CVE-2021-31701 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 high, and availability none.
Is CVE-2021-31701 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31701?: CVE-2021-31701 affects Mintty Project Mintty. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31701?: 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-2021-31701 published?: CVE-2021-31701 was published on 2021-06-06 and last updated on 2026-06-17.

References

https://github.com/mintty/mintty/releases/tag/3.4.7

Affected products (1)

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

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