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Researchers have released proof-of-concept (PoC) exploits for a critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed CitrixBleed2, warning that the flaw is easily exploitable and can successfully steal user session tokens. [...]
Cybersecurity researchers have detailed two now-patched security flaws in SAP Graphical User Interface (GUI) for Windows and Java that, if successfully exploited, could have enabled attackers to access sensitive information under certain conditions
Plus: Netscaler brute force barrage; BeyondTrust API key stolen; and more Infosec in brief There's a problem of titanic proportions brewing for users of the Prometheus open source monitoring toolkit: hundreds of thousands of servers and exporters are exposed to the internet, creating significant security risks and leaving organizations vulnerable to attack.…
AG Says HealthAlliance Tried But Failed to Fix Zero-Day Flaw That Led to ExploitNew York State has levied a $550,000 fine against a healthcare group that tried - but failed - to patch a critical zero-day vulnerability in a Citrix NetScaler appliance used for telemedicine. Hackers exploited the flaw, stealing 196 gigabytes of data in an incident affecting 242,000 people.
The government-backed crew also enjoys ransomware as a side hustle Iranian government-backed cybercriminals have been hacking into US and foreign networks as recently as this month to steal sensitive data and deploy ransomware, and they're breaking in via vulnerable VPN and firewall devices from Check Point, Citrix, Palo Alto Networks and other manufacturers, according to Uncle Sam.…
Citrix notified customers this week to manually mitigate a PuTTY SSH client vulnerability that could allow attackers to steal a XenCenter admin's private SSH key. [...]
The breach was carried out with stolen Citrix credentials for an account that lacked multifactor authentication. Attackers went undetected for days, and Change's backup strategy failed.
Testifies that Citrix authentication snafu has cost the health giant dearly UnitedHealth CEO Andrew Witty will tell US lawmakers Wednesday the cyber-criminals who hit Change Healthcare with ransomware used stolen credentials to remotely access a Citrix portal that didn't have multi-factor authentication enabled.…
UnitedHealth confirms that Change Healthcare's network was breached by the BlackCat ransomware gang, who used stolen credentials to log into the company's Citrix remote access service, which did not have multi-factor authentication enabled. [...]
35M-plus Comcast user IDs accessed by intruder via Citrix Bleed Millions of Comcast Xfinity subscribers' personal data – including potentially their usernames, hashed passwords, contact details, and secret security question-answers – was likely stolen by one or more miscreants exploiting Citrix Bleed in October.…
Ransomware gangs target exposed Citrix Netscaler devices using a publicly available exploit to breach large organizations, steal data, and encrypt files. [...]
The Lockbit ransomware attacks use publicly available exploits for the Citrix Bleed vulnerability (CVE-2023-4966) to breach the systems of large organizations, steal data, and encrypt files. [...]
Hackers are conducting a large-scale campaign to exploit the recent CVE-2023-3519 flaw in Citrix NetScaler Gateways to steal user credentials. [...]
Plus: Citrix ASM has some really bad bugs, and more In brief More than half of the 24.6 billion stolen credential pairs available for sale on the dark web were exposed in the past year, the Digital Shadows Research Team has found.…