Latest cybersecurity reporting from selected sources.

Dirty Frag is a newly disclosed Linux local privilege escalation vulnerability affecting kernel networking and memory-fragment handling components including esp4, esp6, and rxrpc. The vulnerability enables reliable escalation from an unprivileged user to root and may be leveraged after initial compromise through SSH access, web shells, containers, or low-privileged accounts. Microsoft Defender is actively monitoring limited in-the-wild activity and provides detection coverage for exploitation attempts. The post Active attack: Dirty Frag Linux vulnerability expands post-compromise risk appeared first on Microsoft Security Blog.

A large-scale credential harvesting operation has been observed exploiting the React2Shell vulnerability as an initial infection vector to steal database credentials, SSH private keys, Amazon Web Services (AWS) secrets, shell command history, Stripe API keys, and GitHub tokens at scale

Majority of Attacks Target Operational Technology NetworksExploitation attempts against a severe vulnerability in a runtime system widely deployed in operational technology environments spiked globally in the days after open-source maintainers of the Erlang/OTP project published a patch. Attackers could take full control of systems.

A critical RCE vulnerability in Erlang’s OTP SSH daemon has been identified that allows unauthenticated command execution

Malicious actors have been observed exploiting a now-patched critical security flaw impacting Erlang/Open Telecom Platform (OTP) SSH as early as beginning of May 2025, with about 70% of detections originating from firewalls protecting operational technology (OT) networks

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added two critical security flaws impacting Erlang/Open Telecom Platform (OTP) SSH and Roundcube to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation

Public exploits are now available for a critical Erlang/OTP SSH vulnerability tracked as CVE-2025-32433, allowing unauthenticated attackers to remotely execute code on impacted devices. [...]

A critical vulnerability in the Erlang/OTP SSH, tracked as CVE-2025-32433, has been disclosed that allows for unauthenticated remote code execution on vulnerable devices. [...]

A critical security vulnerability has been disclosed in the Erlang/Open Telecom Platform (OTP) SSH implementation that could permit an attacker to execute arbitrary code sans any authentication under certain conditions

OpenSSH has released security updates addressing two vulnerabilities, a machine-in-the-middle (MitM) and a denial of service flaw, with one of the flaws introduced over a decade ago. [...]

As many as six security vulnerabilities have been disclosed in the popular Rsync file-synchronizing tool for Unix systems, some of which could be exploited to execute arbitrary code on a client

SonicWall is emailing customers urging them to upgrade their firewall's SonicOS firmware to patch an authentication bypass vulnerability in SSL VPN and SSH management that is "susceptible to actual exploitation." [...]

Sophos has addressed three vulnerabilities in its Sophos Firewall product that could allow remote unauthenticated threat actors to perform SQL injection, remote code execution, and gain privileged SSH access to devices. [...]

Sophos has addressed three vulnerabilities in its Sophos Firewall product that could allow remote unauthenticated threat actors to perform SQL injection, remote code execution, and gain privileged SSH access to devices. [...]

Many Charging Cable Interfaces Have Exposed SSH and HTTP Ports, Researchers WarnResearchers demonstrated that multiple brands of EV charging stations have vulnerabilities due to manufacturers often leaving open and unsecured SSH and HTTP ports. The risks of these vulnerabilities range from an expanded attack surface to a launching pad for assaults on the power grid.

A critical vulnerability in Kubernetes could allow unauthorized SSH access to a virtual machine running an image created with the Kubernetes Image Builder project. [...]

Threat actors are actively exploiting a now-patched, critical security flaw impacting the Atlassian Confluence Data Center and Confluence Server to conduct illicit cryptocurrency mining on susceptible instances

Citrix notified customers this week to manually mitigate a PuTTY SSH client vulnerability that could allow attackers to steal a XenCenter admin's private SSH key. [...]

A vulnerability tracked as CVE-2024-31497 in PuTTY 0.68 through 0.80 could potentially allow attackers with access to 60 cryptographic signatures to recover the private key used for their generation. [...]

The maintainers of the PuTTY Secure Shell (SSH) and Telnet client are alerting users of a critical vulnerability impacting versions from 0.68 through 0.80 that could be exploited to achieve full recovery of NIST P-521 (ecdsa-sha2-nistp521) private keys