What’s Vulnerable › Vulnerabilities

CVE-2023-22308

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-10-12 · updated 2026-06-17
• Weakness: CWE-191

Description

An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Affected products

• SoftEther VPN: 5.01.9674, 5.02

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737
• https://talosintelligence.com/vulnerability_reports/TALOS-2023-1737
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1737

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