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.
Netscaler
NetScaler ADC/Gateway zero-day exploited by attackers (CVE-2025-7775) – updated!

Three new vulnerabilities affecting (Citrix) NetScaler application delivery controller (ADC) and Gateway devices have been made public, one of which (CVE-2025-7775) has been …

Netscaler
Netscaler vulnerability was exploited as zero-day for nearly two months (CVE-2025-6543)

FortiGuard Labs has reported a dramatic spike in exploitation attempts targeting CitrixBleed 2, a critical buffer over‑read flaw (CVE‑2025‑5777) affecting Citrix NetScaler ADC …

Help Net Security
Citrix delivers new tools for quantum-ready, anywhere work

Citrix has released two new offerings to help enterprises provide secure application access for their entire workforce amid an evolving threat landscape. The first is its …

Netscaler
Check for CitrixBleed 2 exploitation even if you patched quickly! (CVE-2025-5777)

With PoC exploits for CVE-2025-5777 (aka CitrixBleed 2) now public and reports of active exploitation of the flaw since mid-June, you should check whether your Citrix …

Netscaler
CitrixBleed 2 might be actively exploited (CVE-2025-5777)

While Citrix has observed some instances where CVE-2025-6543 has been exploited on vulnerable NetScaler networking appliances, the company still says that they don’t …

Netscaler
Critical Citrix NetScaler bug fixed, upgrade ASAP! (CVE-2025-5777)

Citrix has fixed a critical vulnerability (CVE-2025-5777) in NetScaler ADC and NetScaler Gateway reminiscent of the infamous and widely exploited CitrixBleed flaw. The …

Help Net Security
Citrix acquires deviceTRUST and Strong Network

With the widespread adoption of hybrid work models, where teams operate across geographical regions on managed and unmanaged devices, every connection and endpoint presents a …

cloud security
Cybersecurity fears drive a return to on-premise infrastructure from cloud computing

42% of organizations surveyed in the US are considering or already have moved at least half of their cloud-based workloads back to on-premises infrastructures, a phenomenon …

xfinity
Citrix Bleed leveraged to steal data of 35+ million Comcast Xfinity customers

Telecommunications company Comcast has confirmed a breach that exposed personal information of more than 35.8 million of Xfinity customers. Exploiting Citrix Bleed to breach …

Citrix
How LockBit used Citrix Bleed to breach Boeing and other targets

CVE-2023-4966, aka “Citrix Bleed”, has been exploited by LockBit 3.0 affiliates to breach Boeing’s parts and distribution business, and “other trusted …

ransomware attack
Chinese multinational bank hit by ransomware

The state-owned Industrial and Commercial Bank of China (ICBC), which is one of the largest banks in the world, has been hit by a ransomware attack that led to disrupted …

Citrix
Citrix Bleed: Mass exploitation in progress (CVE-2023-4966)

CVE-2023-4966, aka “Citrix Bleed”, a critical information disclosure vulnerability affecting Citrix NetScaler ADC/Gateway devices, is being massively exploited by …

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