Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2025-23390— Fleet doesn’t validate a server’s certificate when connecting through SSH

Quick assessment

Affected
SUSE fleet
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 Fleet 中发现了一个漏洞。默认情况下，当通过 SSH 连接时，如果远程服务器的证书未设置在 文件中，Fleet 将自动信任该远程服务器的证书。这可能导致对 Fleet 实施中间人（MitM）攻击。如果所连接服务器的证书在 文件中存在可信条目，则 Fleet 将正确验证所呈现证书的真实性。

CVSS 6.3 · Medium EPSS 0.19% · P8

Affected Version Matrix 3

VendorProduct Version RangeStatus
SUSE fleet 0.9.0-rc.1< 0.10.12 affected
0.11.0< 0.11.7 affected
0.12.0< 0.12.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-23390

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Fleet doesn’t validate a server’s certificate when connecting through SSH
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified within Fleet where, by default, Fleet will automatically trust a remote server’s certificate when connecting through SSH if the certificate isn’t set in the `known_hosts` file. This could allow the execution of a man-in-the-middle (MitM) attack against Fleet. In case the server that is being connected to has a trusted entry in the known_hosts file, then Fleet will correctly check the authenticity of the presented certificate.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE fleet 0.9.0-rc.1 ~ 0.10.12 -

II. Public POCs for CVE-2025-23390

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-23390

请登录查看更多情报信息。

Other References for CVE-2025-23390 (2)

Same Patch Batch · SUSE · 2026-10-15 · 5 CVEs total

CVE-2024-22031 8.5 HIGH Rancher users who can create Projects can gain access to arbitrary projects
CVE-2023-32198 8.0 HIGH Steve doesn’t verify a server’s certificate and is susceptible to man-in-the-middle (MitM)
CVE-2026-104618 6.2 MEDIUM sdbootutil: world-readable debug log
CVE-2026-104617 5.1 MEDIUM sdbootutil: qrencode invocation leaks PIN/recovery key in /proc/<pid>/cmdline

IV. Related Vulnerabilities

Same product: fleet
Same vendor: SUSE
Same weakness: CWE-295

V. Comments for CVE-2025-23390

No comments yet

Leave a comment