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.
CISA
CISA sounds alarm on Langflow RCE, Trivy supply chain compromise after rapid exploitation

The US Cybersecurity and Infrastructure Security Agency (CISA) has added two new vulnerabilities to its Known Exploited Vulnerabilities catalog: CVE-2026-33017, a recently …

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 …

vulnerabilities
32% of top-exploited vulnerabilities are over a decade old

Exploitation timelines continued to compress in enterprise environments, with newly disclosed flaws reaching active use almost immediately and older weaknesses remaining …

Oracle
Oracle issues emergency fix for pre-auth RCE in Identity Manager (CVE-2026-21992)

Oracle has released an out-of-band patch for a critical and easily exploitable vulnerability (CVE-2026-21992) in Oracle Identity Manager and Oracle Web Services Manager. The …

ScreenConnect
Unpatched ScreenConnect servers open to attack (CVE-2026-3564)

ConnectWise has patched a critical vulnerability (CVE-2026-3564) that could enable attackers to hijack ScreenConnect sessions by abusing ASP.NET machine keys to forge trusted …

Microsoft SharePoint
CISA warns of active exploitation of Microsoft SharePoint vulnerability (CVE-2026-20963)

CVE-2026-20963, a remote code execution (RCE) SharePoint vulnerability Microsoft fixed in January 2026, is being exploited by attackers. The confirmation comes from the US …

UK
Millions of UK firms on alert after Companies House data exposure

Companies House, the UK’s official company registry, said its WebFiling service is back online after being shut down on Friday to fix a security issue that may have exposed …

Patch Tuesday
Microsoft patches 80+ vulnerabilities, six flagged as “more likely” to be exploited

On March 2026 Patch Tuesday, Microsoft addressed 80+ vulnerabilities affecting its software and cloud services. Of these, two were publicly disclosed, but not actively …

alert
Cisco warns of SD-WAN Manager exploitation, fixes 48 firewall vulnerabilities

Cisco has confirmed that two Catalyst SD-WAN Manager vulnerabilities (CVE-2026-20128 and CVE-2026-20122) patched in late February 2025 are being exploited by attackers. The …

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 …

IceWarp
Over 1,200 IceWarp servers still vulnerable to unauthenticated RCE flaw (CVE-2025-14500)

A critical RCE vulnerability (CVE-2025-14500) in IceWarp, an EU-made business communication and collaboration platform, may be exploited by attackers to gain unauthorized …

Agentic AI
The vulnerability that turns your AI agent against you

Zenity Labs disclosed PleaseFix, a family of critical vulnerabilities affecting agentic browsers, including Perplexity Comet, that allow attackers to hijack AI agents, access …

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