Pre-Auth RCE Alert: Critical SSH Flaw in Erlang/OTP (CVE-2025-32433)


The SonicWall Capture Labs threat research team became aware of a pre-authentication vulnerability in Erlang/OTP (Open Telegram Platform) SSH server implementation, assessed its impact, and developed mitigation measures.

Erlang/OTP is a known toolkit used to build scalable, fault-tolerant systems such as telecommunications, messaging platforms, IoT infrastructure and financial services. It is used by organizations like Ericsson, Cisco and WhatsApp. Identified as CVE-2025-32433, Erlang/OTP SSH vulnerable versions include OTP 27.3.2 and earlier, OTP 26.2.5.10 and earlier, OTP 25.3.2.19 and earlier, and versions from OTP 17.0 and older. These vulnerable versions allow an attacker to be authenticated, verified and logged in as users because the server fails to properly reject certain types of protocol messages that are sent before the authentication phase of the SSH handshake.

Read more…
Source: Sonicwall


Sign up for our Newsletter
The latest news and insights delivered right to your inbox.


Related:

  • Behind the Clouds: Attackers Targeting Governments in Southeast Asia Implement Novel Covert C2 Communication

    July 14, 2025

    Since late 2024, Unit 42 researchers have been tracking a cluster of suspicious activity as CL-STA-1020, targeting governmental entities in Southeast Asia. The threat actors behind this cluster of activity have been collecting sensitive information from government agencies, including information about recent tariffs and trade disputes. This campaign is particularly noteworthy due to its novel tradecraft. ...

  • Episource is notifying millions of people that their health data was stolen

    July 14, 2025

    Medical billing giant Episource is notifying millions of people across the United States that their personal and health information was stolen in a cyberattack earlier this year. The breach affects more than 5.4 million people, according to a listing with the U.S. Department of Health and Human Services, making it one of the largest healthcare breaches ...

  • A major security flaw in top eSIM system could put billions of devices at risk

    July 14, 2025

    Security researchers have discovered a vulnerability in eSIM technology used in virtually all smartphones and many other internet-connected, smart devices. In theory, the flaw could have been abused to intercept or manipulate communications, extract sensitive data, inject malicious applets, and more. There are more than two billion eSIM-enabled devices that could be potentially impacted by this ...

  • CNN, BBC, and CNBC websites impersonated to scam people

    July 14, 2025

    Researchers have uncovered a large campaign impersonating news websites, such as those from CNN, BBC, CNBC, News24, and ABC News, to promote investment scams. Adding a well known brand to your scammy site is a tale as old as time, and gives it an air of legitimacy that increases the likelihood that people will click ...

  • Medicare data breach exposes personal details of 100,000 Americans

    July 12, 2025

    Healthcare data continues to be a top target for cybercriminals. In June alone, two major breaches compromised over 13 million patient records. Now, a newly confirmed Medicare data breach has affected more than 100,000 Americans. The Centers for Medicare & Medicaid Services (CMS) sent letters this week to those affected, confirming that hackers accessed sensitive data ...

  • Bluetooth security flaws could affect thousands of Mercedes, Volkswagen, Skoda cars

    July 11, 2025

    Security researchers have discovered four vulnerabilities in the BlueSDK Bluetooth stack which could be chained together for remote code execution (RCE) attacks. This stack is used by multiple vendors across different industries – including car manufacturing giants Mercedes, Volkswagen, and Skoda (and possibly others). In theory, a threat actor could abuse these flaws to connect to ...