CVE-2026-3055

ulnerability and there are signs of in-the-wild exploitation already. The new memory overread vulnerability, tracked as CVE-2026-8451, was found by researchers from security firm watchTowr who published a detailed write-up showing how unauthenticated malformed requests can result in protected process memory data being leaked back in responses. The ori

Well, well, well - once again, the cat has dragged us in and spat us out. Today, we find ourselves questioning the reality we sit within. Must it be so predictable, and why us? “But watchTowr, what do you mean?” Well, if you’re here, you likely fit

A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. Qilin ransomware group claims the hack of German political party Die Linke U.S. CISA adds a […]

Linked URL: https://defusedcyber.com/citrix-netscaler-cve-2026-3055-honeypot-telemetry | Posted by waihtis | 2 points | 0 comments

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a flaw in Citrix NetScaler to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a flaw in Citrix NetScaler, tracked as CVE-2026-3055 (CVSS ver. 4.0 score of 9.3), to its Known Exploited Vulnerabilities (KEV) catalog. In March, Citrix issued security updates for two NetScaler vulnerabilities, […]

CVE-2026-3055 is a critical Citrix NetScaler vulnerability allowing unauthenticated memory disclosure in SAML IdP configurations. Validate exposure and patch immediately.

For the latest discoveries in cyber research for the week of 30th March, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Iranian state-affiliated threat group Handala Hack has breached FBI director’s Patel’s personal Gmail account and leaked many personal photos and documents. This follows the FBI’s seizure of domains related to Handala Hack’s […]

The critical-severity flaw leaks application memory and can be exploited to obtain authenticated administrative session IDs.

oke up with a nagging feeling: what if Citrix had, in fact, patched multiple Memory Overread vulnerabilities as part of CVE-2026-3055? While we've been using our analysis from Part 1 (please read it first, as this post will be brief) to accurately identify exploitable

Attackers are actively probing a critical Citrix NetScaler flaw (CVE-2026-3055) that can leak sensitive data via a memory overread issue. A critical vulnerability, tracked as CVE-2026-3055 (CVSS score of 9.3), in Citrix NetScaler ADC and Gateway is already being actively probed by attackers. This week, Citrix issued security updates for two NetScaler vulnerabilities, including the critical memory […]

A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. ShinyHunters claims the hack of the European Commission Iran-linked group Handala hacked FBI Director Kash Patel’s […]

Here’s an overview of some of last week’s most interesting news, articles, interviews and videos: NIST updates its DNS security guidance for the first time in over a decade DNS infrastructure underpins nearly every network connection an organization makes, yet security configurations for it have gone largely unrevised at the federal guidance level for more than twelve years. NIST published SP 800-81r3, the Secure Domain Name System Deployment Guide, superseding a version that dates to … More →

Sequels? Pain? We're obviously talking about Citrix NetScalers, yet again. Welcome back to another watchTowr Labs blog post - pull up a chair, we always welcome new members to our group therapy sessions. If you asked a C programmer what they most dislike doing in life, their answer might

A new critical vulnerability that is similar to the widely-exploited CitrixBleed and CitrixBleed2 holes should be patched in NetScaler devices immediately, say experts. The hole, CVE-2026-3055, is an out-of-bounds read vulnerability in customer-managed NetScaler ADC and NetScaler Gateway devices configured as SAML IDP for approving identity and authentication. It’s rated at 9.3 in severity on […]

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 Software Group (Citrix’s parent company), stated on Saturday that Cloud Software Group “is not aware of any unmitigated exploit available for either CVE 2026-3055 or CVE 2026-4368.” Still, as both vulnerabilities can be exploited in low-complexity … More →

Citrix warns of a critical NetScaler flaw (CVE-2026-3055) that could leak sensitive data; users are urged to apply security updates immediately. Citrix issued security updates for two NetScaler vulnerabilities, including a critical memory overread, tracked as CVE-2026-3055 (CVSS score of 9.3), that allows unauthenticated attackers to leak sensitive data. The flaw CVE-2026-3055 is an insufficient […]

An out-of-bounds read vulnerability can be exploited remotely without authentication to read sensitive information from memory.

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