Help Net Security newsletters: Daily and weekly news, cybersecurity jobs, open source projects, breaking news – subscribe here!

Please turn on your JavaScript for this page to function normally.
Cisco
Cisco fixes vulnerability exploited to DoS its firewalls (CVE-2026-20349)

A high-severity vulnerability (CVE-2026-20349) is being leveraged by attackers to temporarily interrupt the operation of Cisco firewalls, the company has confirmed. The flaw …

SIM
Malicious SIMs can hijack smartphones, steal files, and lock them onto 2G

Researchers have found that compromised or malicious SIM cards can issue commands to some smartphones and cellular-connected devices, allowing attackers to steal information, …

SharePoint
200 accounts compromised in Swiss government’s Microsoft SharePoint breach

Hackers exploited vulnerabilities in Microsoft SharePoint servers belonging to Switzerland’s Federal Office of Information Technology, Systems and Telecommunication (BIT), …

Cisco
Critical Cisco IMC bug gives attackers root, PoC is out (CVE-2026-20200)

Cisco has fixed a critical vulnerability (CVE-2026-20200) in its Integrated Management Controller (IMC), which allows an attacker to run commands as root through the …

Omada TP-Link
15 TP-Link Omada vulnerabilities let attackers hijack routers and intercept camera traffic

TP-Link prints the serial number of an Omada router on its packaging and on a label attached to the device. Those numbers run in sequence, and feeding a guessed one to the …

N-able N-central
Attackers exploit N-able N-central flaw to reach managed endpoints (CVE-2026-18577)

Attackers are exploiting an authentication bypass vulnerability (CVE-2026-18577) in N-able N-central, a remote monitoring and management (RMM) solution widely used by managed …

AI
Chinese hacker used DeepSeek to launch autonomous cyberattacks on vulnerable servers

A Chinese threat actor operating under the aliases “knaithe” and “KnYuan” used multiple LLMs to automate cyberattacks against internet-facing systems …

Rails
KindaRails2Shell threatens Ruby on Rails apps (CVE-2026-66066)

A critical security vulnerability (CVE-2026-66066) in Ruby on Rails (aka Rails), one of the most widely used frameworks for building websites and web apps, may allow attackers …

Microsoft Exchange
Laundry Bear’s new Microsoft Exchange attack triggers on email open (CVE-2026-42897)

Russia-affiliated cyber espionage group Laundry Bear (aka Void Blizzard, aka TA488) is exploiting CVE-2026-42897, a cross-site scripting vulnerability in Microsoft Exchange, …

Cisco
Cisco FMC static credentials exploited by attackers (CVE-2026-20316)

A static credentials vulnerability (CVE-2026-20316) in Cisco Secure Firewall Management Center (FMC), a platform for centrally managing multiple Cisco Secure Firewall devices …

error
Exposed BMCs hand out password hashes before login

An attacker who reaches UDP port 623 on a server’s baseboard management controller can ask it for a password hash and receive one before logging in. The exchange is part …

TeamCity JetBrains
JetBrains fixes critical unauthenticated RCE in TeamCity On-Premises (CVE-2026-63077)

JetBrains has fixed a critical vulnerability (CVE-2026-63077) affecting TeamCity On-Premises and is urging admins to upgrade self-hosted servers as soon as possible. …

Don't miss

Cybersecurity news
Daily newsletter sent Monday-Friday
Weekly newsletter sent on Mondays
Editor's choice newsletter sent twice a month
Periodical newsletter released for important security events and breaking news
Weekly newsletter listing new cybersecurity job positions
Monthly newsletter focusing on open source cybersecurity tools