Introduction
Attackers can gain full administrative access to WordPress sites running the RingCentral Communications Plugin simply by submitting matching bogus codes during two-factor authentication. This critical flaw, tracked as CVE-2025-7955, affects plugin versions 1.5 through 1.6.8 and places thousands of business websites at risk of total compromise.
About RingCentral and the Plugin: RingCentral is a leading provider of unified communications services, with millions of business customers worldwide. Their WordPress plugin, RingCentral Communications, enables organizations to integrate voice, messaging, and call management features directly into their WordPress sites. Its adoption spans small businesses to large enterprises, amplifying the impact of any security issue in the plugin ecosystem.
Technical Information
CVE-2025-7955 is rooted in the ringcentral_admin_login_2fa_verify function of the RingCentral Communications Plugin for WordPress, specifically in versions 1.5 through 1.6.8. The vulnerability is a result of improper server-side validation in the two-factor authentication (2FA) process. Instead of securely verifying the authenticity of the 2FA code, the function erroneously accepts any pair of identical codes as valid.
This means an unauthenticated attacker can simply submit two matching bogus codes at the 2FA prompt and the plugin will grant access as the targeted user. The flaw is classified as CWE-287 (Improper Authentication). The vulnerable logic persists across all affected versions, and the issue is confirmed in public advisories and plugin source references (wpsecurity.jp, Wordfence).
No public code snippet is available, but the exploitation method is trivial: submit any two identical codes at the 2FA step to bypass authentication and gain access to any account, including administrative ones.
Detection Methods
Detecting malware, especially when it employs sophisticated obfuscation techniques, requires a multifaceted approach. Malware authors often use methods like comment abuse, variable functions, and string concatenation to evade detection. For instance, they might insert excessive comments within code to break up malicious payloads, making it harder for signature-based scanners to identify threats. (wordfence.com)
To effectively detect such obfuscated malware, consider the following strategies:
-
Signature-Based Detection: Develop and maintain a comprehensive database of malware signatures that account for various obfuscation techniques. This involves creating patterns that can identify malicious code even when it's disguised with comments or variable functions. (wordfence.com)
-
Behavioral Analysis: Monitor the behavior of scripts and applications to identify anomalies indicative of malicious activity. This includes tracking unexpected network requests, file modifications, or execution of unauthorized commands.
-
Heuristic Analysis: Implement heuristic algorithms that can detect new, previously unknown malware by analyzing code structures and behaviors that deviate from the norm.
-
Regular Updates: Continuously update detection tools and databases to recognize the latest obfuscation methods and malware variants.
By integrating these methods, security systems can enhance their ability to detect and mitigate threats posed by obfuscated malware.
Affected Systems and Versions
- Product: RingCentral Communications Plugin for WordPress
- Affected versions: 1.5 through 1.6.8
- Vulnerable configuration: Any WordPress site with the plugin enabled and 2FA active
Vendor Security History
RingCentral has maintained a regular update cadence for its WordPress plugin, but there is no public record of prior authentication bypass vulnerabilities in this product. The persistence of CVE-2025-7955 across multiple versions suggests a need for more rigorous security review in their development process. No data on patch response time for this specific issue was available at the time of writing.