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PatchSiren cyber security CVE debrief

CVE-2026-66483 ThemeREX CVE debrief

The Education Center theme versions <= 3.6.12 is vulnerable to Unauthenticated PHP Object Injection, a critical vulnerability that could allow attackers to execute arbitrary PHP code without authentication. This could lead to potential exploitation, impacting confidentiality, integrity, and availability. Defenders should assess exposure and prioritize patching or mitigation. The CVE record and NVD entry provide limited details

Vendor
ThemeREX
Product
Education Center
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-10
Original CVE updated
2026-10-10
Advisory published
2026-10-10
Advisory updated
2026-10-10

Who should care

Defenders responsible for Education Center theme installations should assess exposure and prioritize patching or mitigation

Why it matters

Defenders should prioritize verifying exposure and applying patches or mitigations for Unauthenticated PHP Object Injection vulnerability in Education Center theme versions <= 3.6.12.

  • Potential for unauthenticated exploitation
  • Possible impact on confidentiality, integrity, and availability
  • Verification of exposure and patching priority

Technical summary

The Education Center theme versions <= 3.6.12 is vulnerable to Unauthenticated PHP Object Injection due to inadequate input validation and sanitization. This allows attackers to inject malicious PHP objects, potentially leading to code execution. The vulnerability is considered critical, with a CVSS score of 9.8, emphasizing the need for immediate attention and remediation.

Defensive priority

Defenders should prioritize verifying exposure and applying patches or mitigations.

Recommended defensive actions

  • Verify exposure by checking installed versions of Education Center theme
  • Apply patches or mitigations provided by the vendor
  • Monitor for potential exploitation attempts

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-66483 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-66483

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

  • CVE-2026-66483 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-66483

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

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.