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CVE-2026-106552

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 sftp 服务中，攻击者可以利用服务器端的功能，在递归复制文件的过程中触发目录遍历漏洞（Directory Traversal），导致文件被写入非预期的位置。

CVSS 4.2 · Medium

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-106552

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In sftp in OpenSSH before 10.6, a server can trigger directory traversal (causing files to be written to unintended locations) during a recursive copy operation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
Source: CVE Program / CVE List V5

Affected Products

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

II. Public POCs for CVE-2026-106552

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III. Intelligence Information for CVE-2026-106552

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Other References for CVE-2026-106552 (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-2026-106582 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-2026-106586 2.5 LOW OpenSSH <10.6 restricted关键字隧道转发绕过
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-23

V. Comments for CVE-2026-106552

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