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CVE-2021-28848

24
FAUCET Score

CVE-2021-28848 describes a denial-of-service vulnerability affecting Mintty versions prior to 3.4.5. Remote servers can exploit this by rapidly changing the terminal window title, causing the Windows GUI to hang due to excessive SetWindowTextA/W calls. This vulnerability has a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity leading to high availability impact. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, including an article from BleepingComputer.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.4.5CPE matchmatch criteria
cpe:2.3:a:mintty_project:mintty:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.64%
Probability of exploitation in next 30 days
EPSS Percentile
73.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0164 is in the 56th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / mintty/mintty/commit/bd52109993440b6996760aaccb66e68e782762b9
PatchThird Party Advisory
github.com / mintty/mintty/compare/3.4.4...3.4.5
PatchThird Party Advisory
mintty.github.io
Vendor Advisory