Microsoft Knack 0.12.0 knack.introspection redos

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Knack 0.12.0 and classified as problematic. The impacted element is an unknown function of the component knack.introspection. This manipulation causes redos. This vulnerability is handled as CVE-2025-54364. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Microsoft Knack 0.12.0 and classified as problematic. Affected by this vulnerability is an unknown part of the component knack.introspection. The manipulation with an unknown input leads to a redos vulnerability. The CWE definition for the vulnerability is CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. As an impact it is known to affect availability. The summary by CVE is:

Microsoft Knack 0.12.0 allows Regular expression Denial of Service (ReDoS) in the knack.introspection module (issue 2 of 2).

The advisory is shared at vulncheck.com. This vulnerability is known as CVE-2025-54364 since 07/21/2025. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/01/2025). MITRE ATT&CK project uses the attack technique T1449.003 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 260144 (Linux Distros Unpatched Vulnerability : CVE-2025-54364), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (260144). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.0
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 260144
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-54364

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/21/2025 CVE reserved
08/20/2025 +30 days Advisory disclosed
08/20/2025 +0 days VulDB entry created
09/01/2025 +12 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: vulncheck.com
Status: Not defined

CVE: CVE-2025-54364 (🔒)
GCVE (CVE): GCVE-0-2025-54364
GCVE (VulDB): GCVE-100-320701

Entryinfo

Created: 08/20/2025 07:45
Updated: 09/01/2025 19:48
Changes: 08/20/2025 07:45 (65), 08/20/2025 13:43 (1), 09/01/2025 19:48 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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