Cyber Resilience

CVE-2023-31192

Softether Vpn 5.01.9674

Public PoC
Published
12 October 2023
Modified
04 November 2025
Patch / advisory
View advisory
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0098 59th percentile
Risk Priority 44 floored blend · peak EPSS

Summary

CVE-2023-31192 is a medium-severity Use of Uninitialized Variable (CWE-457) vulnerability in Softether Vpn. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique OS Credential Dumping (T1003); ranked in the top 41% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability Data

An information disclosure vulnerability exists in the ClientConnect() functionality of SoftEther VPN 5.01.9674. A specially crafted network packet can lead to a disclosure of sensitive information. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.

CWE(s)
CWE-457CWE-908

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
T1552 Unsecured Credentials Credential Access
Adversaries may search compromised systems to find and obtain insecurely stored credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-22308Same product: Softether Vpn
CVE-2025-25567Same product: Softether Vpn
CVE-2025-25568Same product: Softether Vpn
CVE-2025-25565Same product: Softether Vpn
CVE-2023-23581Same product: Softether Vpn
CVE-2023-27395Same product: Softether Vpn
CVE-2023-32275Same product: Softether Vpn
CVE-2023-22325Same product: Softether Vpn
CVE-2023-27516Same product: Softether Vpn
CVE-2025-25566Same product: Softether Vpn

Affected Assets

softether
vpn
5.01.9674

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly catch uninitialized-variable defects via static analysis and code review while the control encompasses many additional development controls.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect uninitialized-variable bugs, but the control is broader.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates practices that reduce uninitialized-variable defects.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify initialization rules, but the control itself does not directly address the weakness.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure system architecture and engineering principles include defensive coding practices that prevent use of uninitialized memory or objects.

A.8.28 Secure coding partial match
prevents

Secure coding explicitly requires variable initialization and static-analysis checks.

References