NetScaler

Government, Finance Orgs Targeted in Weeks-Long NetScaler Zero-Day Attacks

Citrix, exploited, NetScaler, Vulnerabilities, vulnerability, Zero-Day /

Government, Finance Orgs Targeted in Weeks-Long NetScaler Zero-Day Attacks 2026-09-30 at 15:48 By Eduard Kovacs Several security firms have confirmed seeing exploitation of the NetScaler vulnerabilities CVE-2026-88771 and CVE-2026-88772. The post Government, Finance Orgs Targeted in Weeks-Long NetScaler Zero-Day Attacks appeared first on SecurityWeek. This article is an excerpt from SecurityWeek View Original Source

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Suspected state-sponsored hackers exploited NetScaler zero-day since early September (CVE-2026-88772)

Don't miss, education, Europe, financial industry, Google Cloud, Government, Hot stuff, Mandiant, NetScaler, News, telecommunications, USA, WatchTowr /

Suspected state-sponsored hackers exploited NetScaler zero-day since early September (CVE-2026-88772) 2026-09-30 at 15:33 By Zeljka Zorz “Advanced and suspected state-sponsored threat actors” are likely to be behind the initial targeted intrusions that leveraged CVE-2026-88772, one of the two recently disclosed NetScaler vulnerabilities that have been exploited as zero-days, says Mandiant CTO Charles Carmakal. Mandiant and […]

Suspected state-sponsored hackers exploited NetScaler zero-day since early September (CVE-2026-88772) Read More »

NetScaler zero-day exploitation escalates into mass attacks (CVE-2026-88771)

Censys, CERT-EU, Don't miss, GreyNoise, Hot stuff, Lupovis, NetScaler, News, PoC, vulnerability, WatchTowr /

NetScaler zero-day exploitation escalates into mass attacks (CVE-2026-88771) 2026-09-29 at 17:59 By Zeljka Zorz The hacking of internet-exposed, vulnerable Citrix NetScaler ADC and Gateway deployments has escalated. What started as stealthy targeting via zero-day exploits has now become widespread “spray and pray” exploitation, fueled by the publication of a root-cause analysis and a proof-of-concept exploit […]

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Citrix NetScaler RCE zero-days exploited globally for weeks (CVE-2026-88771, CVE-2026-88772)

CISA, Citrix, Don't miss, Hot stuff, NCSC-NL, NetScaler, News, Tenable /

Citrix NetScaler RCE zero-days exploited globally for weeks (CVE-2026-88771, CVE-2026-88772) 2026-09-28 at 12:51 By Zeljka Zorz Citrix has patched eight critical and high-severity vulnerabilities in NetScaler ADC and NetScaler Gateway, two of which (CVE-2026-88771, CVE-2026-88772) have been exploited in zero-day attacks to plant webshells on compromised devices. Rumors about their existence and active exploitation popped […]

Citrix NetScaler RCE zero-days exploited globally for weeks (CVE-2026-88771, CVE-2026-88772) Read More »

Citrix Confirms 2 NetScaler Zero-Days After Admins Pulled the Plug

Citrix, exploited, Featured, NetScaler, Vulnerabilities, vulnerability, Zero-Day /

Citrix Confirms 2 NetScaler Zero-Days After Admins Pulled the Plug 2026-09-28 at 10:29 By Eduard Kovacs Citrix has released patches for the critical NetScaler vulnerabilities tracked as CVE-2026-88771 and CVE-2026-88772. The post Citrix Confirms 2 NetScaler Zero-Days After Admins Pulled the Plug appeared first on SecurityWeek. This article is an excerpt from SecurityWeek View Original […]

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Critical NetScaler Vulnerability Exploited in Attacks

Citrix, exploited, NetScaler, Vulnerabilities, vulnerability /

Critical NetScaler Vulnerability Exploited in Attacks 2026-09-10 at 15:20 By Ionut Arghire Tracked as CVE-2026-19490, the authentication bypass flaw has been exploited in the wild since at least September 3. The post Critical NetScaler Vulnerability Exploited in Attacks appeared first on SecurityWeek. This article is an excerpt from SecurityWeek View Original Source

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Previously patched Citrix NetScaler flaw exploited in the wild (CVE-2026-8452)

Citrix, NetScaler, News, vulnerability, WatchTowr /

Previously patched Citrix NetScaler flaw exploited in the wild (CVE-2026-8452) 2026-08-27 at 12:58 By Sinisa Markovic CISA added six new vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, including a previously patched Citrix NetScaler ADC and Gateway flaw, tracked as CVE-2026-8452, that is being exploited in the wild. The agency published the alert on August […]

Previously patched Citrix NetScaler flaw exploited in the wild (CVE-2026-8452) Read More »

Citrix urges customers to fix critical NetScaler authentication bypass (CVE-2026-19490)

Citrix, CVE, NetScaler, News, Rapid7, vulnerability /

Citrix urges customers to fix critical NetScaler authentication bypass (CVE-2026-19490) 2026-08-21 at 10:55 By Sinisa Markovic Citrix has patched two vulnerabilities in NetScaler ADC and NetScaler Gateway, including a critical authentication bypass flaw tracked as CVE-2026-19490, and is urging customers to upgrade affected appliances as soon as possible. “We strongly recommend that customers review the […]

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Exploitation of Fresh Citrix NetScaler Vulnerability Begins

Citrix, CitrixBleed2, exploited, NetScaler, Vulnerabilities, vulnerability /

Exploitation of Fresh Citrix NetScaler Vulnerability Begins 2026-03-30 at 12:32 By Ionut Arghire The critical-severity flaw leaks application memory and can be exploited to obtain authenticated administrative session IDs. The post Exploitation of Fresh Citrix NetScaler Vulnerability Begins appeared first on SecurityWeek. This article is an excerpt from SecurityWeek View Original Source

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Critical NetScaler ADC, Gateway flaw may soon be exploited (CVE-2026-3055)

Arctic Wolf Networks, Citrix, Don't miss, Hot stuff, NetScaler, News, Rapid7, vulnerability /

Critical NetScaler ADC, Gateway flaw may soon be exploited (CVE-2026-3055) 2026-03-24 at 16:13 By Zeljka Zorz 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 session tokens from the memory of affected devices. Anil Shetty, senior VP of Engineering with Cloud […]

Critical NetScaler ADC, Gateway flaw may soon be exploited (CVE-2026-3055) Read More »

NetScaler ADC/Gateway zero-day exploited by attackers (CVE-2025-7775)

0-day, backdoor, Citrix, Don't miss, Hot stuff, NetScaler, News, web shell /

NetScaler ADC/Gateway zero-day exploited by attackers (CVE-2025-7775) 2025-08-26 at 16:35 By Zeljka Zorz 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 targeted in zero-day attacks. “Exploits of CVE-2025-7775 on unmitigated appliances have been observed,” Citrix has confirmed, and released security […]

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

Citrix, Don't miss, Europe, Fortinet, Hot stuff, NCSC-NL, NetScaler, News, Shadowserver /

Netscaler vulnerability was exploited as zero-day for nearly two months (CVE-2025-6543) 2025-08-12 at 17:51 By Zeljka Zorz FortiGuard Labs has reported a dramatic spike in exploitation attempts targeting Citrix Bleed 2, a critical buffer over‑read flaw (CVE‑2025‑5777) affecting Citrix NetScaler ADC (Application Delivery Controller) and Gateway devices. Since July 28, 2025, they have detected over 6,000 exploitation […]

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

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

Citrix, Don't miss, exploit, Horizon3.ai, Hot stuff, NetScaler, News, PoC, ReliaQuest, WatchTowr /

Check for CitrixBleed 2 exploitation even if you patched quickly! (CVE-2025-5777) 2025-07-08 at 18:32 By Zeljka Zorz 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 ADC and/or Gateway instances have been probed and compromised by attackers. […]

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

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

Censys, Citrix, Don't miss, enterprise, Hot stuff, NetScaler, News, ReliaQuest, vulnerability /

CitrixBleed 2 might be actively exploited (CVE-2025-5777) 2025-06-30 at 15:47 By Zeljka Zorz 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 have evidence of exploitation for CVE-2025-5349 or CVE-2025-5777, both of which have been patched earlier this month. CVE-2025-5777, in […]

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Evidence Suggests Exploitation of CitrixBleed 2 Vulnerability

Citrix, CitrixBleed 2, exploited, Featured, NetScaler, Vulnerabilities /

Evidence Suggests Exploitation of CitrixBleed 2 Vulnerability 2025-06-27 at 12:13 By Eduard Kovacs The Citrix NetScaler vulnerability tracked as CitrixBleed 2 and CVE-2025–5777 may be exploited in the wild for initial access. The post Evidence Suggests Exploitation of CitrixBleed 2 Vulnerability appeared first on SecurityWeek. This article is an excerpt from SecurityWeek View Original Source

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Critical Citrix NetScaler Flaw Exploited as Zero-Day

Citrix, exploited, NetScaler, Vulnerabilities, Zero-Day /

Critical Citrix NetScaler Flaw Exploited as Zero-Day 2025-06-26 at 10:17 By Ionut Arghire Citrix has released patches for a critical vulnerability in NetScaler ADC and NetScaler Gateway exploited as a zero-day. The post Critical Citrix NetScaler Flaw Exploited as Zero-Day appeared first on SecurityWeek. This article is an excerpt from SecurityWeek View Original Source

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

Citrix, Don't miss, enterprise, Hot stuff, NetScaler, News, security update, vulnerability /

Critical Citrix NetScaler bug fixed, upgrade ASAP! (CVE-2025-5777) 2025-06-23 at 14:14 By Zeljka Zorz 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 vulnerabilities have been privately disclosed and there is no indication that they are under active exploitation. Nevertheless, the […]

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Citrix Patches Critical NetScaler Console Vulnerability

Citrix, cloud security, NetScaler, Patch Tuesday, Vulnerabilities /

Citrix Patches Critical NetScaler Console Vulnerability 2024-07-10 at 16:46 By Ionut Arghire Citrix rolls out patches for multiple security vulnerabilities, including critical and high-severity issues in the NetScaler product line. The post Citrix Patches Critical NetScaler Console Vulnerability appeared first on SecurityWeek. This article is an excerpt from SecurityWeek RSS Feed View Original Source

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How LockBit used Citrix Bleed to breach Boeing and other targets

ACSC, CISA, Citrix, Don't miss, FBI, Hot stuff, NetScaler, News, Ransomware, vulnerability /

How LockBit used Citrix Bleed to breach Boeing and other targets 22/11/2023 at 16:47 By Zeljka Zorz 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 third parties have observed similar activity impacting their organization,” cybersecurity and law enforcement officials have confirmed on […]

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Active Exploitation of Big-IP and Citrix vulnerabilities observed by Cyble Global Sensor Intelligence Network

Authentication Bypass, Big-IP, Citrix, CVE-2023-46747, CVE-2023-46748, CVE-2023-4966, exploit, Gateway Buffer Overflow, NetScaler, SQL injection, vulnerability /

Active Exploitation of Big-IP and Citrix vulnerabilities observed by Cyble Global Sensor Intelligence Network 08/11/2023 at 16:02 By cybleinc Cyble’s Global Sensors capture multiple exploit attempts targeting vulnerable BIG-IP and Citrix NetScaler instances. The post Active Exploitation of Big-IP and Citrix vulnerabilities observed by Cyble Global Sensor Intelligence Network appeared first on Cyble. This article […]

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