CVE-2026-25705

High

Published: 13 May 2026

Published

13 May 2026

Modified

13 May 2026

KEV Added

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Patch

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CVSS Score v3.1 8.4 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

EPSS Score 0.0037 28.7th percentile

Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-25705 is a high-severity Path Traversal: '.../...//' (CWE-35) vulnerability in Suse (inferred from references). Its CVSS base score is 8.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 28.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-29915

Vulnerability details

A vulnerability has been identified in [Rancher's Extensions](https://ranchermanager.docs.rancher.com/integrations-in-rancher/rancher-extensions) where malicious code can be injected in Rancher through a path traversal in the `compressedEndpoint` field inside a `UIPlugin` deployment. A malicious UI extension could abuse that to: * Overwrite Rancher binaries…

or configuration to inject code. * Write to /var/lib/rancher/ to tamper with cluster state. * If hostPath volumes are mounted, write to the host node filesystem. * Use this issue to chain with other attack vectors.

CWE(s): CWE-35

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1543.003 Windows Service Persistence

Adversaries may create or modify Windows services to repeatedly execute malicious payloads as part of persistence.

attack.mitre.org →

T1574 Hijack Execution Flow Stealth

Adversaries may execute their own malicious payloads by hijacking the way operating systems run programs.

attack.mitre.org →

Why these techniques?

Path traversal enables arbitrary writes to Rancher binaries/config (T1190 public app exploitation) for code injection/persistence via modified processes (T1543.003) or execution hijacking (T1574).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0