Latest cybersecurity reporting from selected sources.

Cisco patched a critical Unified CM flaw with public PoC code that allows unauthenticated attackers to launch SSRF attacks remotely. Cisco has addressed a high-severity vulnerability, tracked as CVE-2026-20230, affecting Unified CM and Unified CM SME. The flaw, caused by improper validation of certain HTTP requests, allows a remote attacker without authentication to perform server-side […]

Cisco has rolled out updates for a maximum-severity security flaw impacting Secure Workload that could allow an unauthenticated, remote attacker to access sensitive data

Broken vdaemon Peering Authentication Enables Unauthenticated Admin AccessA maximum-severity vulnerability in Cisco Catalyst SD-WAN Controller is being actively exploited, giving attackers administrative privileges without authentication. The authentication bypass vulnerability stems from a broken peering authentication mechanism.

The U.S.Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a newly disclosed vulnerability impacting Cisco Catalyst SD-WAN Controller to its Known Exploited Vulnerabilities (KEV) catalog, requiring Federal Civilian Executive Branch (FCEB) agencies to remediate the issue by May 17, 2026

Cisco is warning that a critical Catalyst SD-WAN Controller authentication bypass flaw, tracked as CVE-2026-20182, was actively exploited in zero-day attacks that allowed attackers to gain administrative privileges on compromised devices. [...]

Cisco has released updates to address a maximum-severity authentication bypass flaw in Catalyst SD-WAN Controller that it said has been exploited in limited attacks

Deal Would Help Cisco Expand Footprint Beyond Authentication, ITDR and ISPMCisco's cyber M&A dry spell could soon come to an end, with the company reportedly in talks to acquire New York-based non-human identity startup Astrix Security for between $250 million and $350 million. That would represent at least a 25% premium to the startup’s last valuation of around $200 million.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added eight new vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, including three flaws impacting Cisco Catalyst SD-WAN Manager, citing evidence of active exploitation

Cisco has released updates to address a critical security flaw in the Integrated Management Controller (IMC) that, if successfully exploited, could allow an unauthenticated, remote attacker to bypass authentication and gain access to the system with elevated privileges

Cisco has patched several critical and high-severity vulnerabilities, including an Integrated Management Controller (IMC) authentication bypass that enables attackers to gain Admin access. [...]

Three-Year Old Zero-Day Under Mass AttackA flaw in Cisco Software-defined network management software has become a hacker free-for-all, warn cybersecurity experts. The flaw allows an unauthenticated remote attacker to bypass authentication and obtain administrative privileges on the affected system.

A newly disclosed maximum-severity security flaw in Cisco Catalyst SD-WAN Controller (formerly vSmart) and Catalyst SD-WAN Manager (formerly vManage) has come under active exploitation in the wild as part of malicious activity that dates back to 2023

Cisco is warning that a critical authentication bypass vulnerability in Cisco Catalyst SD-WAN, tracked as CVE-2026-20127, was actively exploited in zero-day attacks that allowed remote attackers to compromise controllers and add malicious rogue peers to targeted networks. [...]

Flaw Enabled Remote Code Execution, Say AWS ResearchersResearchers from AWS said they spotted a hacking campaign taking advantage of a zero-day vulnerability in Cisco network access control software before the routing giant patched it earlier this year. The flaw let attackers perform pre-authentication remote code execution.

Today, CISA warned that attackers are exploiting a critical missing authentication vulnerability in Palo Alto Networks Expedition, a migration tool that can help convert firewall configuration from Checkpoint, Cisco, and other vendors to PAN-OS. [...]

Also: Hacker Sells Data Obtained Through Snowflake AttackThis week, Microsoft deprecated NTLM authentication, a hacker put apparently stolen Snowflake data up for sale, Ticketmaster confirmed its breach, Cisco patched Webex vulnerabilities, pro-Russian hacktivists claimed a DDoS attack in Spain and Kaspersky launched a free virus removal tool for Linux.

Cisco is warning about a global surge in brute-force attacks targeting various devices, including Virtual Private Network (VPN) services, web application authentication interfaces, and SSH services, since at least March 18, 2024

Also warns of brute force attacks targeting its own VPNs, Check Point, Fortinet, SonicWall and more Cisco is fighting fires on a couple fronts this week after security incidents involving its Duo multi-factor authentication (MFA) service and its remote-access VPN services.…

A third-party telephony service provider for Cisco Duo falls prey to social engineering, and the company advises customer vigilance against subsequent phishing attacks.

Cisco Duo's security team warns that hackers stole some customers' VoIP and SMS logs for multi-factor authentication (MFA) messages in a cyberattack on their telephony provider. [...]