CVE-2023-27395 - CVE House

Back to Database

Status published Critical CVE-2023-27395

A heap-based buffer overflow vulnerability exists in the vpnserver WpcParsePacket()...

9 CVSS

Vulnerability Description

A heap-based buffer overflow vulnerability exists in the vpnserver WpcParsePacket() functionality of SoftEther VPN 4.41-9782-beta, 5.01.9674 and 5.02. A specially crafted network packet can lead to arbitrary code execution. An attacker can perform a man-in-the-middle attack to trigger this vulnerability.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-27395

Check My Exposure

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Discovered by Lilith >_> of Cisco Talos.

References

More from SoftEther VPN

View All →

An authentication bypass vulnerability exists in the CiRpcServerThread() functionality of...

An information disclosure vulnerability exists in the CtEnumCa() functionality of...

An information disclosure vulnerability exists in the ClientConnect() functionality of...

An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of...

A denial-of-service vulnerability exists in the vpnserver ConnectionAccept() functionality of...

Affected Vendor

SoftEther VPN

View all reports →

Affected Software

SoftEther VPN

Vulnerable Versions:

4.41-9782-beta, 5.01.9674, 5.02

Timeline

Official Publish: October 12th, 2023

Last Modified: August 2nd, 2024

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1203 Exploitation for Client Execution

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1055 Process Injection

Defense Evasion