CVE-2023-27395

HIGH EPSS 69.4%
Published Oct 12, 20232y ago · Modified Jun 17, 20262w ago
8.1 CVSS 3.1
High
Find Similar
Published Oct 12, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.1
Exploitability
2.2
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
69.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-122
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 3

VendorProductVersionRange
softethervpn4.41-9782any
softethervpn5.01.9674any
softethervpn5.02any

References 3

  • talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2023-1735
    ExploitThird Party Advisory
  • softether.org https://www.softether.org/9-about/News/904-SEVPN202301
    PatchVendor Advisory
  • talosintelligence.com https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1735

Remediation

  • softether.org https://www.softether.org/9-about/News/904-SEVPN202301
    PatchVendor Advisory