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CVE-2026-106586

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.

在 OpenSSH 10.6 版本之前的 sshd 中，restrict 关键字（位于 authorized_keys 文件中）本应用于限制隧道转发功能，但实际上并未生效。该漏洞与 CVE-2026-73283 不同。

CVSS 2.5 · Low

Possible ATT&CK Techniques 1 AI

T1572 · Protocol Tunneling
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I. Basic Information for CVE-2026-106586

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In sshd in OpenSSH before 10.6, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not, a different vulnerability than CVE-2026-73283.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
控制流实现总是不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenBSD OpenSSH 0 ~ 10.6 -

II. Public POCs for CVE-2026-106586

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-106586

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Other References for CVE-2026-106586 (1)

Same Patch Batch · OpenBSD · 2026-10-06 · 10 CVEs total

CVE-2026-106585 6.5 MEDIUM OpenSSH 10.6前解压缩漏洞
CVE-2026-106552 4.2 MEDIUM OpenSSH sftp远程目录遍历漏洞
CVE-2026-106582 3.7 LOW OpenSSH <10.6 压缩漏洞
CVE-2026-106587 3.6 LOW OpenSSH 10.6前sshd配置项解析漏洞
CVE-2026-106588 3.1 LOW OpenSSH 10.6及以前macOS 27+沙盒丢失漏洞
CVE-2026-106589 2.9 LOW OpenSSH 10.6及以下版本权限提升漏洞
CVE-2026-106584 2.5 LOW OpenSSH<10.6证书过期时间错误
CVE-2026-106553 2.2 LOW OpenSSH低于10.6版本GSSAPI凭证持久化漏洞
CVE-2026-106555 2.2 LOW OpenSSH <10.6 GSSAPI认证状态持久化漏洞

IV. Related Vulnerabilities

Same product: OpenSSH
Same vendor: OpenBSD
Same weakness: CWE-670

V. Comments for CVE-2026-106586

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