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:

  • Organised crime online: How Europol disrupts cybercrime

    November 27, 2025

    How does Europol target cybercrime networks? Investigate phishing-as-a-service platforms? Or help tackle child sexual exploitation? This publication, presented at the Committee on Civil Liberties, Justice and Home Affairs Ordinary (LIBE), provides a general overview on how Europol disrupts cybercrime, taking the key insights from the Internet Organised Crime Threat Assessment (IOCTA) and EU Serious and Organised ...

  • The Golden Scale: ‘Tis the Season for Unwanted Gifts

    November 26, 2025

    In October 2025, we published two Insights blogs on threat activity affiliated with the cybercriminal alliance known as Scattered LAPSUS$ Hunters (SLSH). After a few weeks of apparent inactivity, the threat actors have returned with a vengeance based on open-source reporting and conversations obtained from a new Telegram channel (scattered LAPSUS$ hunters part 7). This latest ...

  • Bug in jury systems used by several US states exposed sensitive personal data

    November 26, 2025

    Several public websites designed to allow courts across the United States and Canada to manage the personal information of potential jurors had a simple security flaw that easily exposed their sensitive data, including names and home addresses, TechCrunch has exclusively learned. A security researcher, who asked not to be named for this story, contacted TechCrunch with ...

  • New macOS malware chain could cause a major security headache

    November 26, 2025

    North Korean state-sponsored threat actors are targeting macOS users with new malware, utilizing a strategy that combines two popular approaches – fake job ads, and ClickFix, experts have warned. Security researchers Jamf confirmed they have spotted attacks in the wild using ClickFix, an attack method in which the victim is presented with a fake problem, and ...

  • Multiple London councils hit by ‘cyber attack’

    November 26, 2025

    Several London councils have been hit by a “cyber attack” which could have compromised residents’ data. Kensington and Chelsea, Hammersmith and Fulham, and Westminster City councils said they have been responding to a “cyber security issue” since Monday morning. The councils, which share a number of IT systems, added they are working with the “help of ...

  • FBI: Account Takeover Fraud via Impersonation of Financial Institution Support

    November 25, 2025

    The FBI warns of cyber criminals impersonating financial institutions to steal money or information in Account Takeover (ATO) fraud schemes. The cyber criminals target individuals, businesses, and organizations of varied sizes and across sectors. In ATO fraud, cyber criminals gain unauthorized access to the targeted online financial institution, payroll, or health savings account, with the ...