What is the CVSS score of CVE-2023-54334?

CVE-2023-54334 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Explorer are affected by CVE-2023-54334?

CVE-2023-54334 presents critical security risk, a stack-based buffer overflow vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2023-54334?

Yes, a public proof-of-concept exploit is available for CVE-2023-54334. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2023-54334?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Explorer CVE-2023-54334

CRITICAL

Stack-based Buffer Overflow (CWE-121)

2026-01-13 disclosure@vulncheck.com

Buffer Overflow Explorer

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 30, 2026 - 15:51 vuln.today

Public exploit code

CVE Published

Jan 13, 2026 - 23:16 nvd

CRITICAL 9.8

DescriptionCVE.org

Explorer32++ 1.3.5.531 contains a buffer overflow vulnerability in Structured Exception Handler (SEH) records that allows attackers to execute arbitrary code. Attackers can exploit the vulnerability by providing a long file name argument over 396 characters to corrupt the SEH chain and potentially execute malicious code.