Cybersecurity researchers warned about the active exploitation of a critical vulnerability in MetInfo CMS, a Content Management System widely used in certain Asian markets for corporate sites, business portals, and institutional pages.
The flaw, identified as CVE-2026-29014, is being used by attackers to compromise vulnerable servers and deploy malware, web shells, and remote persistence tools. The situation is a cause for concern because numerous affected systems remain publicly exposed without security updates applied.
According to a report published by The Hacker News, the vulnerability allows remote code execution, meaning an attacker could take full control of the affected server without needing prior authentication in certain configurations.
The problem directly affects web servers running vulnerable versions of MetInfo CMS, especially those accessible from the Internet and with insecure configurations or outdated software.
The observed exploitation in real attacks again demonstrates how CMSs continue to be a preferred target for malicious actors. Although many organizations focus their attention on large enterprise platforms or cloud systems, thousands of small and medium sites continue running vulnerable software that can easily become an entry point for broader compromises.
Researchers detected that attackers use the vulnerability to install web shells that allow maintaining persistent access to the compromised server. Once inside, operators can execute arbitrary commands, modify files, steal sensitive information, or use the server for new malicious campaigns.
In many cases, this type of compromise also leads to:
- phishing campaigns,
- malware distribution,
- hosting fraudulent pages,
- attacks against site visitors,
- deployment of cryptominers,
- lateral movement within corporate networks.
One of the most concerning aspects is the speed at which web vulnerabilities are currently being exploited. The time between public disclosure of a flaw and the start of active attacks has drastically reduced in recent years. In numerous cases, automated actors begin scanning the Internet as soon as a new CVE is published.
This generates enormous pressure on administrators and security teams, especially in small organizations that do not have mature patch management processes.
The MetInfo CMS case also reflects a recurring issue in modern web security: many lesser-known platforms are outside the radar of traditional corporate monitoring. While popular solutions usually receive constant attention, regional or specialized CMSs frequently remain years without adequate security reviews.
From an offensive perspective, these systems represent extremely attractive targets because:
- they are often publicly exposed,
- they receive less monitoring,
- they use insecure plugins,
- they maintain weak configurations,
- they often run on poorly maintained servers.
Specialists recommend immediately updating MetInfo CMS to patched versions and carefully reviewing any indicators of compromise on potentially affected servers.
They also suggest:
- analyzing historical web logs,
- searching for suspicious files,
- reviewing unknown administrative accounts,
- monitoring outgoing traffic,
- restricting unnecessary permissions,
- segmenting critical servers,
- implementing WAFs and continuous monitoring.
In parallel, the campaign again shows how attackers continue to automate the massive exploitation of vulnerable web applications as an initial access mechanism.
As the Internet keeps millions of outdated applications publicly exposed, vulnerabilities in CMS will remain one of the most used entry points to compromise enterprise infrastructure and launch larger-scale attacks.
Source: The Hacker News.