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Vireo CVE-2025-62751

HIGH
Missing Authorization (CWE-862)
2025-12-31 audit@patchstack.com
8.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

The CVSS v3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) indicates this is a network-exploitable vulnerability with low attack complexity requiring only low-privileged authenticated access, no user interaction, and delivering high impact across confidentiality, integrity, and availability. The CVSS base score of 8.8 categorizes this as HIGH severity. However, real-world risk signals present a nuanced picture: the EPSS score of 0.04% (13th percentile) suggests extremely low predicted exploitation probability in the wild, and no public exploit code exists at time of analysis. The vulnerability is not present in CISA's Known Exploited Vulnerabilities catalog, confirming no active exploitation campaigns have been observed. The requirement for authenticated access (PR:L) significantly constrains the attack surface compared to unauthenticated vulnerabilities, as attackers must first obtain valid credentials to a WordPress instance running the vulnerable theme. From an SSVC perspective, exploitation status is 'none', technical impact is 'total' (arbitrary read/write/delete operations possible), and automatability is moderate given the need for authentication context. Priority should be elevated for organizations using Vireo theme in production environments with untrusted authenticated users, but this is not a critical emergency for most environments given the low observed exploitation probability and authentication prerequisite.

Exploit ScenarioDerived

An attacker who has obtained low-privilege credentials to a WordPress site running Vireo theme 1.0.24-for example, by registering a free subscriber account or compromising a contributor account through credential stuffing-authenticates to the WordPress instance and identifies missing authorization checks in theme functionality. Leveraging the CWE-862 flaw, the attacker directly accesses administrative theme configuration endpoints or restricted WordPress functions without proper capability validation. The attacker can then modify theme settings to inject malicious JavaScript, access confidential data stored in custom post types or theme options, escalate their own privileges by manipulating user metadata, or disrupt site availability by corrupting theme configuration. The low attack complexity (AC:L) and lack of user interaction requirement (UI:N) mean exploitation requires only basic knowledge of WordPress theme architecture and standard HTTP requests. No public exploit code exists at time of analysis, but the straightforward nature of authorization bypass vulnerabilities makes manual exploitation feasible for attackers with basic web application security knowledge.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 01, 2026

Missing authorization in the Vireo WordPress theme (versions up to 1.0.24) enables authenticated attackers with low privileges to bypass access controls and execute high-impact operations including data exfiltration, integrity compromise, and availability disruption. The vulnerability affects a specific WordPress theme product from extendthemes with CVSS 8.8 severity. While EPSS probability is low (0.04%, 13th percentile), the low attack complexity and network attack vector warrant attention for sites using this theme. No public exploit identified at time of analysis, and not listed in CISA KEV.

RemediationAI

Organizations using the Vireo WordPress theme should immediately upgrade to a patched version newer than 1.0.24 if available from extendthemes. Consult the official Patchstack advisory at https://patchstack.com/database/Wordpress/Theme/vireo/vulnerability/wordpress-vireo-theme-1-0-24-broken-access-control-vulnerability for specific patch availability and version recommendations from the vendor. As an interim mitigation measure while awaiting patches, organizations should audit user accounts with access to WordPress instances running Vireo theme, remove unnecessary low-privileged accounts, implement strict user role assignments following principle of least privilege, and monitor WordPress access logs for suspicious activity patterns from authenticated users attempting to access administrative functionality. Consider implementing additional WordPress security plugins that provide enhanced authorization enforcement and activity monitoring at the application layer. If the theme is not actively required for site functionality, temporarily switching to an alternative maintained WordPress theme eliminates the attack surface entirely. For production environments with sensitive data, consider isolating WordPress instances running vulnerable Vireo versions behind additional authentication layers or restricting network access until patches can be applied.

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability stems from CWE-862 (Missing Authorization), a failure to properly validate user permissions before granting access to restricted functionality or resources. The Vireo WordPress theme lacks proper authorization checks on sensitive operations, allowing users who have successfully authenticated to the WordPress instance-even with minimal privileges like subscriber or contributor roles-to access functionality that should be restricted to administrators or higher-privileged accounts. The CPE identifier (cpe:2.3:a:extendthemes:vireo:*:*:*:*:*:wordpress:*:*) confirms this affects the extendthemes Vireo theme running on WordPress platforms. Missing authorization vulnerabilities in WordPress themes commonly arise when theme developers fail to implement capability checks (such as current_user_can() functions) before executing privileged actions, or when access control lists are improperly configured during theme installation and initialization.

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Severity by source

NVD PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Severity Changed
Sep 23, 2026 - 17:22 NVD
MEDIUM HIGH
CVSS changed
Sep 23, 2026 - 17:22 NVD
4.3 (MEDIUM) 8.8 (HIGH)
Severity Changed
Apr 23, 2026 - 15:43 NVD
HIGH MEDIUM
CVSS changed
Apr 23, 2026 - 15:43 NVD
8.8 (HIGH) 4.3 (MEDIUM)
CVE Published
Dec 31, 2025 - 16:15 nvd
HIGH 8.8

DescriptionNVD

Missing Authorization vulnerability in extendthemes Vireo vireo allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Vireo: from n/a through <= 1.0.24.

Executive ViewAI

Why It Matters

The Vireo WordPress theme (up to version 1.0.24) contains an authorization bypass vulnerability that allows low-privileged authenticated users to perform unauthorized operations including data theft, content manipulation, and service disruption. Organizations running this theme must immediately audit user accounts and restrict contributor-level access, as the vulnerability requires only basic authentication-not admin credentials-to trigger high-impact attacks.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Restrict contributor and low-privilege user access to essential personnel only; (2) enable and monitor WordPress audit logging for unauthorized admin actions; (3) implement Web Application Firewall (WAF) rules to flag unusual privilege escalation patterns; (4) regularly audit user role assignments and capability modifications; (5) consider disabling theme features that exposed endpoints until patched.

Threat Intelligence Overview

EPSS Score
0.0%
Top 87% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

44
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:extendthemes:vireo:*:*:*:*:*:wordpress:*:*

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