CVE-2025-67996

CriticalRCE

Published: 20 February 2026

Published

20 February 2026

Modified

15 April 2026

KEV Added

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Patch

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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0037 29.2th percentile

Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2025-67996 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 29.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2025-67996 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the BoldThemes Nestin WordPress theme, which allows Object Injection. This issue affects Nestin versions from n/a through those prior to 1.2.6. Published on 2026-02-20, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical due to its potential for severe impact.

An unauthenticated remote attacker can exploit this vulnerability over the network with low attack complexity and without requiring user interaction. Exploitation enables high-impact compromise of confidentiality, integrity, and availability, potentially allowing arbitrary object injection via untrusted deserialization.

The Patchstack advisory details the vulnerability in the WordPress Nestin theme and confirms it was fixed in version 1.2.6. Practitioners should update affected Nestin themes to version 1.2.6 or later to mitigate the risk.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-208058

Vulnerability details

Deserialization of Untrusted Data vulnerability in BoldThemes Nestin nestin allows Object Injection.This issue affects Nestin: from n/a through < 1.2.6.