HOMEVULNERABILITIESCVE-2021-28848
HIGH

CVE-2021-28848

CWE-770Published: June 3, 2021· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-28848 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

mintty_project1 product(s)
mintty
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9
PATCHhttps://github.com/mintty/mintty/compare/3.4.4...3.4.5
PATCHhttps://github.com/mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9
PATCHhttps://github.com/mintty/mintty/compare/3.4.4...3.4.5
ADVISORYhttps://mintty.github.io/
ADVISORYhttps://mintty.github.io/

All References (6)

→
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

Quick Facts

CVE IDCVE-2021-28848
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-770
CISA KEVNo
Affected1 vendor(s)
PublishedJun 3, 2021

Related CVEs (CWE-770)

CVE-2023-25156
9.8
CVE-2025-11832
9.8
CVE-2021-47875
9.8
CVE-2018-20033
9.8
CVE-2022-3439
9.8
CVE-2019-17067
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-28848 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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