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Vendor archive

softether CVEs

Beta · best-effort

15 CVEs tagged to vendor softether4 Critical, 7 High, 4 Medium, 0 Low, 0 Unrated.

CVE-2026-39312

Published Apr 7, 2026

SoftEtherVPN is a an open-source cross-platform multi-protocol VPN Program. In 5.2.5188 and earlier, a pre-authentication denial-of-service vulnerability exists in SoftEther VPN D…

CVSS 7.5 · High
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2025-25568

Published Mar 12, 2025

SoftEtherVPN 5.02.5187 is vulnerable to Use after Free in the Command.c file via the CheckNetworkAcceptThread function. NOTE: the Supplier disputes this because the use-after-free…

CVSS 9.8 · Critical
evidence mentions
2
Buzz score
21.0
Vendor/product tagsBeta · best-effort

CVE-2025-25567

Published Mar 12, 2025

SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in Internat.c via the UniToStrForSingleChars function. NOTE: the Supplier disputes this because the behavior only enables…

CVSS 9.8 · Critical
evidence mentions
2
Buzz score
21.0
Vendor/product tagsBeta · best-effort

CVE-2025-25566

Published Mar 12, 2025

Memory Leak vulnerability in SoftEtherVPN 5.02.5187 allows an attacker to cause a denial of service via the UnixMemoryAlloc function. NOTE: the Supplier disputes this because the…

CVSS 5.6 · Medium
evidence mentions
2
Buzz score
21.0
Vendor/product tagsBeta · best-effort

CVE-2025-25565

Published Mar 12, 2025

SoftEther VPN 5.02.5187 is vulnerable to Buffer Overflow in the Command.c file via the PtMakeCert and PtMakeCert2048 functions. NOTE: the Supplier disputes this because the behavi…

CVSS 9.8 · Critical
evidence mentions
2
Buzz score
21.0
Vendor/product tagsBeta · best-effort

CVE-2023-32634

Published Oct 12, 2023

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-mi…

CVSS 7.8 · High
Vendor/product tagsBeta · best-effort

CVE-2023-32275

Published Oct 12, 2023

An information disclosure vulnerability exists in the CtEnumCa() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. Specially crafted network packets can lead to a discl…

CVSS 5.5 · Medium
Vendor/product tagsBeta · best-effort

CVE-2023-31192

Published Oct 12, 2023

An information disclosure vulnerability exists in the ClientConnect() functionality of SoftEther VPN 5.01.9674. A specially crafted network packet can lead to a disclosure of sens…

CVSS 5.3 · Medium
Vendor/product tagsBeta · best-effort

CVE-2023-27516

Published Oct 12, 2023

An authentication bypass vulnerability exists in the CiRpcAccepted() functionality of SoftEther VPN 4.41-9782-beta and 5.01.9674. A specially crafted network packet can lead to un…

CVSS 7.3 · High
Vendor/product tagsBeta · best-effort

CVE-2023-27395

Published Oct 12, 2023

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…

CVSS 9.0 · Critical
Vendor/product tagsBeta · best-effort

CVE-2023-25774

Published Oct 12, 2023

A denial-of-service vulnerability exists in the vpnserver ConnectionAccept() functionality of SoftEther VPN 5.02. A set of specially crafted network connections can lead to denial…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2023-23581

Published Oct 12, 2023

A denial-of-service vulnerability exists in the vpnserver EnSafeHttpHeaderValueStr functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead t…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2023-22325

Published Oct 12, 2023

A denial of service vulnerability exists in the DCRegister DDNS_RPC_MAX_RECV_SIZE functionality of SoftEther VPN 4.41-9782-beta, 5.01.9674 and 5.02. A specially crafted network pa…

CVSS 5.9 · Medium
Vendor/product tagsBeta · best-effort

CVE-2023-22308

Published Oct 12, 2023

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…

CVSS 7.5 · High
Vendor/product tagsBeta · best-effort

CVE-2019-11868

Published Jul 29, 2019

See.sys, up to version 4.25, in SoftEther VPN Server versions 4.29 or older, allows a user to call an IOCTL specifying any kernel address to which arbitrary bytes are written to.

CVSS 7.8 · High
Vendor/product tagsBeta · best-effort
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