What is the CVSS score of CVE-2025-67996?

CVE-2025-67996 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of BoldThemes Nestin are affected by CVE-2025-67996?

A critical deserialization vulnerability (CVE-2025-67996) in BoldThemes Nestin versions below 1.2.6 allows attackers to inject malicious objects and execute arbitrary code with a 9.8 CVSS severity…

How to fix or mitigate CVE-2025-67996?

Within 24 hours: Inventory all systems running Nestin and identify affected versions below 1.2.6; immediately isolate or restrict network access to affected instances. Within 7 days: Implement WAF rules to block malicious serialized object payloads; apply input validation and disable deserialization features if operationally feasible. Within 30 days: Develop or obtain a patched version from BoldThemes; plan and execute a controlled upgrade; conduct forensic analysis for signs of exploitation.

BoldThemes Nestin CVE-2025-67996

CRITICAL

Deserialization of Untrusted Data (CWE-502)

2026-02-20 audit@patchstack.com

Deserialization

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

CVE Published

Feb 20, 2026 - 16:22 nvd

CRITICAL 9.8

DescriptionCVE.org

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

AnalysisAI

Deserialization of untrusted data in Nestin (nestin) WordPress theme allows PHP Object Injection, potentially enabling remote code execution through POP chains.

Technical ContextAI

CWE-502 deserialization of untrusted data in nestin. Attacker-controlled data is passed to unserialize(), enabling instantiation of arbitrary PHP objects.

Affected ProductsAI

Nestin WordPress theme

RemediationAI

Update the theme. Avoid unserialize() on user input.

CVE-2025-67996 vulnerability details – vuln.today

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BoldThemes Nestin CVE-2025-67996

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

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External POC / Exploit Code