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Attackers wasted little time targeting the latest memory disclosure flaw in Citrix's NetScaler products, after researchers published a proof-of-concept exploit (PoC).
Citrix on Tuesday released security updates to address multiple flaws in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway) that could be exploited by an attacker to facilitate arbitrary file reads or trigger a denial-of-service (DoS) condition
The bulletin includes six NetScaler issues, but attention is centered on a high-severity flaw with similarities to earlier actively exploited bugs. The post Citrix patches a new NetScaler flaw with echoes of CitrixBleed appeared first on CyberScoop.
Also, Lloyds Data Leak, Dutch Treasury Breach, Citrix Bug Exploit, Pay2Key ActivityThis week, Lloyds data leak hits 450K, Dutch treasury breach, Citrix flaw exploited, Iran-linked ransomware ops, TrueConf zero-day, Russian fraud ring sentenced, Romania targeted, patch gaps persist, and U.S. hospital breach affects 257K.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) ordered government agencies to patch their Citrix NetScaler appliances against an actively exploited vulnerability by Thursday. [...]
Hackers are exploiting a critical severity vulnerability, tracked as CVE-2026-3055, in Citrix NetScaler ADC and NetScaler Gateway appliances to obtain sensitive data. [...]
F5 Revises Severity of Flaw Disclosed Last YearFlaws in major application delivery and security platforms and VPN gateways are being actively exploited or targeted. Under fire: a vulnerability in F5 BIG-IP Access Policy Manager can facilitate remote code execution, and a "memory overread" flaw in NetScaler Application Delivery Controller.
Researchers say attackers are already looting vulnerable boxes In-the-wild exploitation of a critical Citrix NetScaler bug has begun less than a week after disclosure, with researchers warning that attackers are already poking and pillaging vulnerable boxes.…
A recently disclosed critical security flaw impacting Citrix NetScaler ADC and NetScaler Gateway is witnessing active reconnaissance activity, according to Defused Cyber and watchTowr
Citrix has patched two NetScaler ADC and NetScaler Gateway vulnerabilities, one of which is very similar to the CitrixBleed and CitrixBleed2 flaws exploited in zero-day attacks in recent years. [...]
Citrix has released security updates to address two vulnerabilities in NetScaler ADC and NetScaler Gateway, including a critical flaw that could be exploited to leak sensitive data from the application
Amazon's threat intelligence team on Wednesday disclosed that it observed an advanced threat actor exploiting two then-zero-day security flaws in Cisco Identity Service Engine (ISE) and Citrix NetScaler ADC products as part of attacks designed to deliver custom malware
An advanced threat actor exploited the critical vulnerabilities "Citrix Bleed 2" (CVE-2025-5777) in NetScaler ADC and Gateway, and CVE-2025-20337 affecting Cisco Identity Service Engine (ISE) as zero-days to deploy custom malware. [...]
A European telecommunications organization is said to have been targeted by a threat actor that aligns with a China-nexus cyber espionage group known as Salt Typhoon
A cyber intrusion by China-linked group Salt Typhoon has been observed targeting global infrastructure via DLL sideloading
Threat actors are attempting to leverage a newly released artificial intelligence (AI) offensive security tool called HexStrike AI to exploit recently disclosed security flaws
Shadowserver counts more than 13,000 appliances still wide open – including thousands in US, Germany, and UK Thousands of Citrix NetScaler appliances remain exposed to a trio of security flaws that the vendor patched this week, one of which is already being actively exploited in the wild.…
More than 28,200 Citrix instances are vulnerable to a critical remote code execution vulnerability tracked as CVE-2025-7775 that is already being exploited in the wild. [...]
Citrix fixed three NetScaler ADC and NetScaler Gateway flaws today, including a critical remote code execution flaw tracked as CVE-2025-7775 that was actively exploited in attacks as a zero-day vulnerability. [...]
The flaw is one of three that the company disclosed affecting its NetScaler ADC and NetScaler Gateway technologies.