Explore the latest Citrix security updates, vulnerabilities, and best practices. Stay informed on protecting your Citrix environment with our insights.
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Background for this topic.
Citrix delivers virtualization and remote access platforms that enable users to run applications and desktops hosted on centralized servers. These technologies support remote work by providing virtualized environments accessible from various devices, often serving as gateways to internal corporate networks. Key components include virtual apps, desktops, and networking tools that facilitate secure connections to enterprise resources.
Citrix environments are critical security targets because vulnerabilities can allow attackers to bypass authentication, execute remote code, or escalate privileges, potentially leading to broader network compromise. Security risks increase with misconfigurations or delayed patching of known flaws. Defenders should prioritize timely updates, enforce strong multi-factor authentication, and monitor remote sessions for unusual activity to reduce exposure to exploitation attempts targeting Citrix infrastructure.
Weekly headline count for the current query.
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.…
PLUS: Citrix CISO urges patch blitz; Mandiant founder reveals AI red-teaming tech; Bitter privacy news for Starbucks; And more Infosec In Brief Canadian outsourcer Telus Digital has admitted it fell victim to a cyberattack.…
Vendors (still) keep mum An "advanced" attacker exploited CitrixBleed 2 and a max-severity Cisco Identity Services Engine (ISE) bug as zero-days to deploy custom malware, according to Amazon Chief Information Security Officer CJ Moses.…
LLMs and 0-days - what could possibly go wrong? Attackers on underground forums claimed they were using HexStrike AI, an open-source red-teaming tool, against Citrix NetScaler vulnerabilities within hours of disclosure, according to Check Point cybersecurity evangelist Amit Weigman.…
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.…
Criminals already abusing its latest zero-days Citrix has pushed out fixes for three fresh NetScaler holes – and yes, they've already been used in the wild before the vendor got around to patching.…
Add CISA to the list The US Cybersecurity and Infrastructure Security Agency has added its weighty name to the list of parties agreeing that CVE-2025-5777, dubbed CitrixBleed 2 by one researcher, has been under exploitation and abused to hijack user sessions.…
NetScaler vendor issued a patch but otherwise, stony silence Multiple exploits are circulating for CVE-2025-5777, a critical bug in Citrix NetScaler ADC and NetScaler Gateway dubbed CitrixBleed 2, and security analysts are warning a "significant portion" of users still haven't patched.…
Two emergency patches issued in two weeks Hot on the heels of patching a critical bug in Citrix-owned Netscaler ADC and NetScaler Gateway that one security researcher dubbed "CitrixBleed 2," the embattled networking device vendor today issued an emergency patch for yet another super-serious flaw in the same products — but not before criminals found and exploited it as a zero-day.…
Why are you even reading this story? Patch now! Citrix patched a critical vulnerability in its NetScaler ADC and NetScaler Gateway products that is already being compared to the infamous CitrixBleed flaw exploited by ransomware gangs and other cyber scum, although there haven't been any reports of active exploitation. Yet.…
CEO of Cloud Software a 'special government employee' probing through IT for Elon Musk's DOGE The US Treasury has revealed Tom Krause – the chief exec of Citrix and Netscaler owner Cloud Software Group – has "read-only" access to a vital federal government payment system that disburses trillions of dollars annually.…
Microsoft starts 2025 as it hopefully doesn't mean to go on Devices that have Citrix's Session Recording software installed are having problems completing this month's Microsoft Patch Tuesday update, which includes important fixes.…
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.…
Acquires two companies that offer stuff for those on the nice list to keep naughty list types at bay Citrix has gone on a European shopping trip, and come home with its bag of gifts bulging thanks to a pair of major buys: infosec outfits deviceTRUST and Strong Network.…
'Once again, we've lost a little more faith in the internet,' researcher says Researchers are publicizing a proof of concept (PoC) exploit for what they're calling an unauthenticated remote code execution (RCE) vulnerability in Citrix's Virtual Apps and Desktops.…
CISA wants you to leap on Citrix and Ivanti issues. Adobe, Intel, SAP also bid for patching priorities Patch Tuesday Another Patch Tuesday has dawned, as usual with the unpleasant news that there are pressing security weaknesses and blunders to address.…
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.…
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.…
Just when you thought you had recovered from Bleed Two vulnerabilities in NetScaler's ADC and Gateway products have been fixed – but not before criminals found and exploited them, according to the vendor.…
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.…