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CVE-2025-54364

Quick assessment

Affected
Microsoft Knack
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

knack是Microsoft开源的一个命令行界面框架。 knack 0.12.0版本存在安全漏洞，该漏洞源于正则表达式拒绝服务。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.36% · P29

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-54364

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Microsoft Knack 0.12.0 allows Regular expression Denial of Service (ReDoS) in the knack.introspection module. option_descriptions employs an inefficient regular expression pattern: "\s(:param)\s+(.+?)\s:(.*)" that is susceptible to catastrophic backtracking when processing crafted docstrings containing a large volume of whitespace without a terminating colon. An attacker who can control or inject docstring content into affected applications can trigger excessive CPU consumption. This software is used by Azure CLI.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
knack 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
knack是Microsoft开源的一个命令行界面框架。 knack 0.12.0版本存在安全漏洞，该漏洞源于正则表达式拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Knack 0.12.0 -

II. Public POCs for CVE-2025-54364

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III. Intelligence Information for CVE-2025-54364

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Vendor Advisories for CVE-2025-54364 (1)

IV. Related Vulnerabilities

Same product: Knack
Same vendor: Microsoft
Same weakness: CWE-1333

V. Comments for CVE-2025-54364

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