What’s Vulnerable › Vulnerabilities

CVE-2023-27395

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-10-12 · updated 2026-06-17
• Weakness: CWE-122

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.

Affected products

• SoftEther VPN: 4.41-9782-beta, 5.01.9674, 5.02

References

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

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