• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

Severe Hikvision HikCentral product flaws: What You Need to Know

 | 

U.S. CISA adds TP-Link Archer C7(EU) and TL-WR841N flaws to its Known Exploited Vulnerabilities catalog

 | 

Google addressed two Android flaws actively exploited in targeted attacks

 | 

U.S. CISA adds WhatsApp, and TP-link flaws to its Known Exploited Vulnerabilities catalog

 | 

Android droppers evolved into versatile tools to spread malware

 | 

Jaguar Land Rover shuts down systems after cyberattack, no evidence of customer data theft

 | 

Cloudflare blocked a record 11.5 Tbps DDoS attack

 | 

Palo Alto Networks disclosed a data breach linked to Salesloft Drift incident

 | 

Von der Leyen’s plane hit by suspected Russian GPS Jamming in Bulgaria, landed Safely

 | 

Supply-chain attack hits Zscaler via Salesloft Drift, leaking customer info

 | 

Crooks exploit Meta malvertising to target Android users with Brokewell

 | 

North Korea’s APT37 deploys RokRAT in new phishing campaign against academics

 | 

Fraudster stole over $1.5 million from city of Baltimore

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 60

 | 

Security Affairs newsletter Round 539 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

Amazon blocks APT29 campaign targeting Microsoft device code authentication

 | 

Lab Dookhtegan hacking group disrupts communications on dozens of Iranian ships

 | 

New zero-click exploit allegedly used to hack WhatsApp users

 | 

US and Dutch Police dismantle VerifTools fake ID marketplace

 | 

Experts warn of actively exploited FreePBX zero-day

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Hacking
  • Over 80,000 servers hit as Roundcube RCE bug gets rapidly exploited

Over 80,000 servers hit as Roundcube RCE bug gets rapidly exploited

Pierluigi Paganini June 11, 2025

A critical remote code execution (RCE) vulnerability in Roundcube was exploited days after patch, impacting over 80,000 servers.

Threat actors exploited a critical remote code execution (RCE) flaw in Roundcube, tracked as CVE-2025-49113, just days after the patch was released, targeting over 80,000 servers.

Roundcube is a popular webmail platform and has been repeatedly targeted by advanced threat groups like APT28 and Winter Vivern. In the past, attackers exploited these vulnerabilities to steal login credentials and spy on sensitive communications. These campaigns show how unpatched systems remain at serious risk, especially for high-value targets.

Last week, the critical flaw CVE-2025-49113 (CVSS score of 9.9) was discovered after it had gone unnoticed for over a decade. An attacker can exploit the flaw to take control of affected systems and run malicious code, putting users and organizations at significant risk. Kirill Firsov, founder and CEO of FearsOff, discovered the vulnerability.

“Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php, leading to PHP Object Deserialization.” reads the advisory published by NIST.

The vulnerability has been addressed in 1.6.11 and 1.5.10 LTS.

Firsov estimates that the flaw impacts over 53 million hosts (and tools like cPanel, Plesk, ISPConfig, DirectAdmin, etc.), he said that details and PoC will be published soon.

After the disclosure of the flaw, the researchers at Positive Technologies announced they have reproduced CVE-2025-49113 in Roundcube. The experts urge users to update to the latest version of Roundcube immediately.

Researchers at the Shadowserver Foundation warned that roughly 84,000 Roundcube instances exposed on the Internet are still unpatched.

For the last few days, we are reporting out Roundcube CVE-2025-49113 vulnerable instances (allows remote code execution by authenticated users). Roundcube vulnerabilities have been frequently used for targeted attacks by possible state actors. We see ~84K unpatched worldwide. pic.twitter.com/ZmjVz3dlU5

— The Shadowserver Foundation (@Shadowserver) June 8, 2025

At this time, Shadowserver data shows more than 84,000 Internet-facing servers are vulnerable.

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, Roundcube)


facebook linkedin twitter

Hacking hacking news information security news IT Information Security Roundcube Security Affairs Security News

you might also like

Pierluigi Paganini September 04, 2025
Severe Hikvision HikCentral product flaws: What You Need to Know
Read more
Pierluigi Paganini September 04, 2025
U.S. CISA adds TP-Link Archer C7(EU) and TL-WR841N flaws to its Known Exploited Vulnerabilities catalog
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    Severe Hikvision HikCentral product flaws: What You Need to Know

    Hacking / September 04, 2025

    U.S. CISA adds TP-Link Archer C7(EU) and TL-WR841N flaws to its Known Exploited Vulnerabilities catalog

    Hacking / September 04, 2025

    Crooks turn HexStrike AI into a weapon for fresh vulnerabilities

    Cyber Crime / September 03, 2025

    Google addressed two Android flaws actively exploited in targeted attacks

    Security / September 03, 2025

    U.S. CISA adds WhatsApp, and TP-link flaws to its Known Exploited Vulnerabilities catalog

    Hacking / September 03, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT