Appsecure logo

CVE-2022-27228: Critical Vulnerability in Bitrix24

CVE-2022-27228 is a critical vulnerability in the Bitrix Site Manager's vote module, allowing remote unauthenticated attackers to execute arbitrary code. Immediate remediation is required.

CRITICALCVSS 9.8 · Published March 22, 2022

Not a customer? See how AppSecure simulates real world attacks to protect your infrastructure.

Speak to Experts

CVE-2022-27228 is a critical vulnerability affecting the Bitrix Site Manager, specifically in the vote (aka "Polls, Votes") module prior to version 21.0.100. This vulnerability allows a remote unauthenticated attacker to execute arbitrary code on the affected system, posing a significant risk to organizations that utilize this platform.

With a CVSS score of 9.8, this vulnerability falls into the critical severity category, indicating that it has a high potential for exploitation. Organizations using Bitrix24 should be particularly vigilant as this vulnerability can lead to complete system compromise.

Risk to organizations includes unauthorized access and control over the system, which could lead to data breaches or further exploitation of connected systems. Given the nature of this vulnerability, immediate action is essential to mitigate the risks associated with its exploitation.

As of now, there are no known public exploits or proof of concept code available, but this does not diminish the urgency for organizations to prioritize patching their systems.

Organizations should prioritize patching immediately.

Vulnerability Details

This vulnerability allows a remote unauthenticated attacker to execute arbitrary code in the vote module of Bitrix Site Manager versions prior to 21.0.100. The CVSS score of 9.8 indicates a critical severity level, which highlights the urgency for organizations to address this vulnerability.

The vulnerability has been classified under CWE-20, which refers to improper input validation, making it susceptible to exploitation due to inadequate checks on user inputs.

The vulnerability was published on March 22, 2022. Organizations should ensure they are using the latest version of Bitrix24 to mitigate this risk.

Technical Analysis

The root cause of this vulnerability lies in the improper validation of user inputs within the vote module. Attackers can exploit this flaw over a network without requiring any privileges or user interaction, making it particularly dangerous.

The attack complexity is low, meaning that even less sophisticated attackers can leverage this vulnerability for exploitation. The potential impacts are severe, affecting confidentiality, integrity, and availability of the affected systems.

Risk & Impact Analysis

Real-world deployment of this vulnerability presents a significant risk to organizations that utilize Bitrix24. The potential blast radius includes any data processed by the affected module, which could lead to unauthorized access, data manipulation, or service disruption.

As the vulnerability is classified as critical, organizations should assess their exposure and prioritize remediation actions. The high EPS score of 0.923 indicates that this vulnerability is likely to be exploited in the wild.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

All versions of Bitrix24 prior to 21.0.100 are affected by this vulnerability. Organizations should ensure they upgrade to the latest version to mitigate the risk.

Mitigation & Remediation

To remediate this vulnerability, organizations should upgrade their Bitrix24 installations to version 21.0.100 or later. If immediate patching is not possible, consider implementing network controls to restrict access to the affected module. Regular monitoring for unusual activity in the application is also recommended.

For further guidance on effective security practices, organizations can refer to the penetration testing services offered by AppSecure.

Detection Guidance

Organizations should monitor logs for indicators of exploitation attempts. Look for unexpected requests to the vote module and analyze behavioral anomalies that may indicate an attack. Network signatures can be crafted to detect unusual patterns of traffic targeting Bitrix24.

AppSecure Threat Intelligence Insight

The long-term significance of CVE-2022-27228 lies in its demonstration of how improper input validation can lead to severe vulnerabilities. This case highlights the importance of thorough security assessments and continuous monitoring of applications.

Organizations should consider adopting a proactive approach to security, which includes regular vulnerability assessments and code reviews. For comprehensive coverage of security practices, refer to the vulnerability management program and the latest from the penetration testing methodology insights from AppSecure.

Organizations should also explore the benefits of AI-driven security solutions to enhance their defenses against evolving threats.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

Latest CVEs. Recently published vulnerabilities from the NVD database.

View all vulnerabilities
CVE IDSeverity
CVE-2025-65418HIGH
CVE-2025-65417MEDIUM
CVE-2025-65416MEDIUM
CVE-2025-65415MEDIUM
CVE-2025-61314HIGH

Protect Your Business with Hacker-Focused Approach.