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PatchSiren cyber security CVE debrief

CVE-2025-71261 SUSE CVE debrief

CVE-2025-71261 is a high-severity vulnerability in SUSE Harvester that allows an attacker with network-level access between the SUSE Virtualization and Rancher Manager to interfere with the TLS handshake and bypass TLS as a security control. The vulnerability has a CVSS score of 8.6 and is classified as HIGH.

Vendor
SUSE
Product
Harvester
CVSS
HIGH 8.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-16
Original CVE updated
2026-06-16
Advisory published
2026-06-16
Advisory updated
2026-06-16

Who should care

Users of SUSE Harvester versions prior to 1.8.0 should be aware of this vulnerability and take steps to mitigate it.

Technical summary

An attacker with network-level access between the SUSE Virtualization and Rancher Manager in SUSE Harvester before 1.8.0 could interfere with the TLS handshake and abuse it to bypass TLS as a security control.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to SUSE Harvester version 1.8.0 or later.
  • Implement additional security controls to monitor and restrict network access between SUSE Virtualization and Rancher Manager.

Evidence notes

The vulnerability is described in CVE-2025-71261 and has a CVSS vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-71261 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-71261

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-71261 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-71261

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.