How severe is CVE-2026-4546?

CVE-2026-4546 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-4546 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4546?

CVE-2026-4546 affects Flos-freeware Notepad2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4546?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-4546 have an EU (EUVD) identifier?

Yes. CVE-2026-4546 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14303.

When was CVE-2026-4546 published?

CVE-2026-4546 was published on 2026-03-22 and last updated on 2026-06-17.

CVE-2026-4546

CVE-2026-4546 is a high-severity vulnerability in Flos-freeware Notepad2 with a CVSS 3.x base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-426.

Key facts

Severity: High (CVSS 3.x base score 7.0)
CVSS v2: 6.0
CVSS v4: 7.3
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14303
Weakness: CWE-426
Affected product: Flos-freeware Notepad2
Published: 2026-03-22
Last modified: 2026-06-17

Description

A weakness has been identified in Flos Freeware Notepad2 4.2.25. This impacts an unknown function in the library TextShaping.dll. Executing a manipulation can lead to uncontrolled search path. The attack is restricted to local execution. The attack requires a high level of complexity. The exploitability is said to be difficult. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-4546?: A weakness has been identified in Flos Freeware Notepad2 4.2.25. This impacts an unknown function in the library TextShaping.dll. Executing a manipulation can lead to uncontrolled search path. The attack is restricted to local execution. The attack requires a high level of complexity. The exploitability is said to be difficult. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-4546?: CVE-2026-4546 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-4546 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4546?: CVE-2026-4546 affects Flos-freeware Notepad2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4546?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-4546 have an EU (EUVD) identifier?: Yes. CVE-2026-4546 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14303.
When was CVE-2026-4546 published?: CVE-2026-4546 was published on 2026-03-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:flos-freeware:notepad2:4.2.25:*:*:*:*:*:*:*

More vulnerabilities in Flos-freeware Notepad2

CVE-2026-4545 — High (CVSS 7.0): A security flaw has been discovered in Flos Freeware Notepad2 4.2.25. This affects an unknown function in the library…

All CVEs affecting Flos-freeware Notepad2 →

Other CWE-426 (Untrusted Search Path) vulnerabilities

CVE-2026-45772 — Critical (CVSS 9.8): Turborepo is a high-performance build system for JavaScript and TypeScript codebases. From 1.1.0 to before 2.9.14,…
CVE-2025-26155 — Critical (CVSS 9.8): NCP Secure Enterprise Client 13.18 and NCP Secure Entry Windows Client 13.19 have an Untrusted Search Path…
CVE-2024-53866 — Critical (CVSS 9.8): The package manager pnpm prior to version 9.15.0 seems to mishandle overrides and global cache: Overrides from one…
CVE-2024-38462 — Critical (CVSS 9.8): iRODS before 4.3.2 provides an msiSendMail function with a problematic dependency on the mail binary, such as in the…
CVE-2023-30330 — Critical (CVSS 9.8): SoftExpert (SE) Excellence Suite 2.x versions before 2.1.3 is vulnerable to Local File Inclusion in the function…
CVE-2022-24826 — Critical (CVSS 9.8): On Windows, if Git LFS operates on a malicious repository with a `..exe` file as well as a file named `git.exe`, and…

Browse all CWE-426 (Untrusted Search Path) vulnerabilities →