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PatchSiren cyber security CVE debrief

CVE-2025-69111 ThemeREX CVE debrief

CVE-2025-69111 is a critical vulnerability in the Reisen theme, allowing unauthenticated PHP object injection. It has a CVSS score of 9.8 and was published on June 17, 2026. The vulnerability affects Reisen theme versions up to 1.4.1. Successful exploitation could lead to severe impacts, including high confidentiality, integrity, and availability risks. Users of the Reisen theme should take immediate action to mitigate this vulnerability. The CVE record and NVD detail provide further information on this vulnerability.

Vendor
ThemeREX
Product
Reisen
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-06-17
Advisory published
2026-06-17
Advisory updated
2026-06-17

Who should care

Administrators and users of the Reisen theme, particularly those using version 1.4.1 or earlier, should be aware of this critical vulnerability. This vulnerability could be exploited by attackers to gain unauthorized access and control over affected systems.

Technical summary

CVE-2025-69111 is an unauthenticated PHP object injection vulnerability in the Reisen theme, affecting versions up to 1.4.1. The vulnerability has a CVSS score of 9.8, indicating critical severity. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, showing that the vulnerability can be exploited over the network with low attack complexity and no privileges required. The weakness is classified as CWE-502.

Defensive priority

high

Recommended defensive actions

  • Update the Reisen theme to a version that is not vulnerable.
  • Restrict access to the Reisen theme to only trusted users.
  • Implement additional security measures, such as web application firewalls.
  • Monitor systems for suspicious activity.
  • Consider using a security information and event management system.
  • Review and update incident response plans.
  • Isolate affected systems if exploitation is detected.

Evidence notes

The information provided is based on data from official sources, including the CVE record and NVD detail. The CVE record was published on June 17, 2026, and the NVD detail was last modified on June 17, 2026. The vulnerability was reported by [email protected].

Official resources

public