CVE-2023-32634 | BDVDB-2026-213967 Detail

SoftEther VPNSoftEther VPN

Description#

An authentication bypass vulnerability exists in the CiRpcServerThread() functionality of SoftEther VPN 5.01.9674 and 4.41-9782-beta. An attacker can perform a local man-in-the-middle attack to trigger this vulnerability.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-300 Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

References#

Exploit#

No public exploit known

History#

Version 12023-10-12Record published in the CVE List.
Version 22025-11-04Most recent update recorded in the CVE List.

Published

Published: 2023-10-12
Last modified: 2025-11-04

Vendor information

Vendor: SoftEther VPN
Product: SoftEther VPN

All SoftEther VPN vulnerabilities

Score

7.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 37.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
4.41-9782-beta
Fixed
Not stated
Vulnerable
5.01.9674
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).