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CVE-2026-73281

Quick assessment

Affected
OpenBSD OpenSSH
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.

OpenBSD OpenSSH是加拿大OpenBSD基金会开源的一款提供加密远程登录与安全连接的产品。 OpenBSD OpenSSH 10.5之前版本存在权限许可和访问控制问题漏洞，该漏洞源于代理锁定与session-bind@openssh.com扩展之间的错误交互，导致某些本应仅在本地执行的操作可以远程执行，包括添加令牌或使用密钥。

CVSS 3.5 · Low EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenBSD OpenSSH < 10.5 affected
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I. Basic Information for CVE-2026-73281

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bind@openssh.com extension.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在范围间的资源转移不正确
Source: CVE Program / CVE List V5
Vulnerability Title
OpenBSD OpenSSH 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenBSD OpenSSH是加拿大OpenBSD基金会开源的一款提供加密远程登录与安全连接的产品。 OpenBSD OpenSSH 10.5之前版本存在权限许可和访问控制问题漏洞，该漏洞源于代理锁定与session-bind@openssh.com扩展之间的错误交互，导致某些本应仅在本地执行的操作可以远程执行，包括添加令牌或使用密钥。
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
OpenBSD OpenSSH 0 ~ 10.5 -

II. Public POCs for CVE-2026-73281

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III. Intelligence Information for CVE-2026-73281

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Other References for CVE-2026-73281 (1)

Same Patch Batch · OpenBSD · 2026-08-11 · 3 CVEs total

CVE-2026-73282 4.8 MEDIUM OpenBSD OpenSSH 资源管理错误漏洞
CVE-2026-73283 2.5 LOW OpenBSD OpenSSH 处理逻辑错误漏洞

IV. Related Vulnerabilities

Same product: OpenSSH
Same vendor: OpenBSD
Same weakness: CWE-669

V. Comments for CVE-2026-73281

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