Flos Freeware Notepad2 4.2.25 TextShaping.dll uncontrolled search path

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.9$0-$5k0.80

Summaryinfo

A vulnerability was found in Flos Freeware Notepad2 4.2.25. It has been rated as problematic. Affected is an unknown function in the library TextShaping.dll. The manipulation leads to uncontrolled search path. This vulnerability is listed as CVE-2026-4546. The attack must be carried out locally. There is no available exploit. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in Flos Freeware Notepad2 4.2.25 and classified as critical. This issue affects an unknown function in the library TextShaping.dll. The manipulation with an unknown input leads to a uncontrolled search path vulnerability. Using CWE to declare the problem leads to CWE-427. The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors. Impacted is confidentiality, integrity, and availability.

The advisory is shared at drive.google.com. The identification of this vulnerability is CVE-2026-4546. The exploitation is known to be difficult. An attack has to be approached locally. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/05/2026). MITRE ATT&CK project uses the attack technique T1574 for this issue.

The vendor was contacted early about this disclosure but did not respond in any way.

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 EUVD (EUVD-2026-14303). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

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: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.0
VulDB Temp Score: 6.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.0
CNA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Uncontrolled search path
CWE: CWE-427 / CWE-426
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/21/2026 Advisory disclosed
03/21/2026 +0 days VulDB entry created
05/05/2026 +45 days VulDB entry last update

Sourcesinfo

Advisory: drive.google.com
Status: Not defined

CVE: CVE-2026-4546 (🔒)
GCVE (CVE): GCVE-0-2026-4546
GCVE (VulDB): GCVE-100-352373
EUVD: 🔒

Entryinfo

Created: 03/21/2026 17:49
Updated: 05/05/2026 21:10
Changes: 03/21/2026 17:49 (52), 03/22/2026 15:36 (1), 05/05/2026 21:10 (31)
Complete: 🔍
Submitter: haehanse
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #774778: Flos Freeware Notepad2 4.2.25 Uncontrolled Search Path - DLL Hijacking with TextShaping.dll (by haehanse)

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

Discussion

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