Regular Expression Denial of Service in Microsoft Knack 0.12.0
CVE-2025-54363

6.9MEDIUM

Key Information:

Vendor

Microsoft
Status
Knack
Vendor
CVE Published:
20 August 2025

What is CVE-2025-54363?

A vulnerability in Microsoft Knack 0.12.0 allows attackers to exploit the knack.introspection module, leading to potential Denial of Service through crafted regular expressions. This may cause excessive resource consumption, impacting the performance and availability of applications relying on this module.

Affected Version(s)

Knack 0.12.0

References

https://github.com/microsoft/knack
https://www.vulncheck.com/advisories/microsoft-knack-pyth...
https://github.com/microsoft/knack/issues/281

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-54363 : Regular Expression Denial of Service in Microsoft Knack 0.12.0