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.
PaperCut
Attackers plant remote access tools on compromised PaperCut servers

The threat actor targeting internet-facing PaperCut Application Servers is covertly installing legitimate remote access software on them, PaperCut Software shared in the most …

Citrix
Citrix urges customers to fix critical NetScaler authentication bypass (CVE-2026-19490)

Citrix has patched two vulnerabilities in NetScaler ADC and NetScaler Gateway, including a critical authentication bypass flaw tracked as CVE-2026-19490, and is urging …

monitor
8,539 reasons to rethink how vulnerabilities get patched

The window for responding to newly disclosed security flaws is getting shorter. Exploit code can appear quickly, exploitability can be tested soon after disclosure, and …

SharePoint
Attackers exploit critical SharePoint flaw after PoC goes public (CVE-2026-55040)

Threat actors have begun exploiting a critical Microsoft SharePoint flaw following the release of proof-of-concept (PoC) exploit code by Rapid7. About CVE-2026-55040 Tracked …

Check Point
Attackers exploit critical Check Point flaw to take over firewall management (CVE-2026-16232)

Attackers are exploiting a critical authentication bypass vulnerability (CVE-2026-16232) that affects Check Point Security Management and Multi-Domain Security Management, the …

find
More alerts are making your team slower, and an outcome-based SOC fixes that

In this Help Net Security video, Thom Langford, EMEA CTO, Rapid7, explains why piling on more security alerts makes a SOC slower to respond. Attackers log in with stolen …

SonicWall
SonicWall SMA appliances targeted in zero-day attacks (CVE-2026-15409, CVE-2026-15410)

SonicWall has fixed two actively exploited vulnerabilities (CVE-2026-15409, CVE-2026-15410) affecting its Secure Mobile Access (SMA) 1000 Series appliances, and is urging …

Palo Alto Networks
Hackers are exploiting Palo Alto GlobalProtect VPN authentication bypass (CVE-2026-0257)

Authentication bypass vulnerabilities (CVE-2026-0257) in Palo Alto Networks’ firewalls that the company disclosed on May 13 have been targeted in “limited exploit …

Cisco
Cisco patches another actively exploited SD-WAN zero-day (CVE-2026-20182)

Cisco has patched yet another Catalyst SD-WAN Controller authentication bypass vulnerability (CVE-2026-20182) that has been exploited as a zero-day by “a highly …

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 malware
Researchers release tool to detect stealthy BPFDoor implants in critical infrastructure networks

Telecommunications providers around the world have been dealing with the burrowing efforts of the China-linked APTs for many years now. To help them identify hard-to-detect …

Netscaler
Critical NetScaler ADC, Gateway flaw may soon be exploited (CVE-2026-3055)

Citrix has fixed two vulnerabilities in NetScaler ADC and NetScaler Gateway, with the more serious flaw (CVE-2026-3055) potentially allowing attackers to extract active …

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