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CVE-2025-46806— Misaligned Memory Accesses in `is_openvpn_protocol()`

Quick assessment

Affected
https://github.com/yrutschle/sslh/releases/tag/v2.2.4 sslh
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

sslh是Yves Rutschle个人开发者的一个应用协议多路复用器。 sslh 2.2.4之前版本存在安全漏洞，该漏洞源于越界指针偏移，可能导致拒绝服务。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.47% · P38

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-46806

Vulnerability Information
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Vulnerability Title
Misaligned Memory Accesses in `is_openvpn_protocol()`
Source: CVE Program / CVE List V5
Vulnerability Description
A Use of Out-of-range Pointer Offset vulnerability in sslh leads to denial of service on some architectures.This issue affects sslh before 2.2.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用越界的指针偏移
Source: CVE Program / CVE List V5
Vulnerability Title
sslh 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sslh是Yves Rutschle个人开发者的一个应用协议多路复用器。 sslh 2.2.4之前版本存在安全漏洞，该漏洞源于越界指针偏移，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
https://github.com/yrutschle/sslh/releases/tag/v2.2.4 sslh ? ~ 2.2.4 -

II. Public POCs for CVE-2025-46806

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III. Intelligence Information for CVE-2025-46806

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Vendor Advisories for CVE-2025-46806 (1)

IV. Related Vulnerabilities

Same product: sslh
Same vendor: https://github.com/yrutschle/sslh/releases/tag/v2.2.4
Same weakness: CWE-823

V. Comments for CVE-2025-46806

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