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.
Windows Server
Windows Netlogon RCE exploited, domain controllers at risk (CVE-2026-41089)

CVE-2026-41089, a critical Windows Netlogon RCE flaw that allows remote code execution, is now actively exploited in the wild, the Centre for Cybersecurity Belgium (CCB) …

access
Microsoft provides mitigation for “YellowKey” BitLocker bypass flaw (CVE-2026-45585)

Microsoft is working on a fix for CVE-2026-45585 (aka “Yellowkey”), a vulnerability that can be used by attackers to bypass protections offered by BitLocker, the …

NGINX
Attackers are exploiting critical NGINX vulnerability (CVE-2026-42945)

A critical NGINX vulnerability (CVE-2026-42945) disclosed last week is being exploited by attackers, VulnCheck security researcher Patrick Garrity revealed on Saturday. The …

Linux
Fragnesia: New Linux kernel LPE bug was spawned by Dirty Frag patch (CVE-2026-46300)

Researchers have found and disclosed yet another local privilege escalation (LPE) vulnerability in the Linux kernel: CVE-2026-46300, aka “Fragnesia”. The flaw is …

cPanel
cPanel zero-day exploited for months before patch release (CVE-2026-41940)

A critical authentication bypass vulnerability (CVE-2026-41940) in cPanel, a popular web-based control panel for managing web hosting accounts, is being exploited by attackers …

Linux
Nine-year-old Linux kernel flaw enables reliable local privilege escalation (CVE-2026-31431)

Security researchers at Theori have disclosed a high-severity local privilege escalation (LPE) vulnerability (CVE-2026-31431) in the Linux kernel. The flaw, nicknamed …

Microsoft Windows Defender
Researcher drops two more Microsoft Defender zero-days, all three now exploited in the wild

The security researcher who earlier this month published a proof-of-concept (PoC) exploit for a zero-day privilege escalation vulnerability in Microsoft Defender is back with …

Microsoft Windows Defender
BlueHammer: Windows zero-day exploit leaked

A buggy but functional proof-of-concept (PoC) exploit for an unpatched Windows local privilege escalation vulnerability dubbed BlueHammer has been published on GitHub by …

FreeScout
FreeScout vulnerability enables unauthenticated, zero-click RCE via email (CVE-2026-28289)

A newly discovered vulnerability (CVE-2026-28289) in the open-source help desk platform FreeScout could allow attackers to take over vulnerable servers by sending a specially …

BeyondTrust
Hackers probe, exploit newly patched BeyondTrust RCE flaw (CVE-2026-1731)

Attackers are exploiting a recently patched critical vulnerability (CVE-2026-1731) in internet-facing BeyondTrust Remote Support and Privileged Remote Access instances. …

Microsoft Windows
Windows Notepad Markdown feature opens door to RCE (CVE-2026-20841)

Among the many security fixes released by Microsoft on February 2026 Patch Tuesday is one for CVE-2026-20841, a command injection vulnerability in Notepad that could be …

Fortinet
PoC exploit for critical FortiSIEM vulnerability released (CVE-2025-64155)

A critical vulnerability (CVE-2025-64155) in Fortinet’s FortiSIEM security platform has now been accompanied by publicly released proof-of-concept (PoC) exploit code, raising …

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 when there is breaking news
Weekly newsletter listing new cybersecurity job positions
Monthly newsletter focusing on open source cybersecurity tools