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Citrix NetScaler
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- 1Hackers exploit Citrix NetScaler zero-day to deploy web shellsโ"Hackers exploit Citrix NetScaler zero-day to deploy web shells" "[...] Cybersecurity firms say attackers exploited the
Cybersecurity firms report attackers are exploiting a previously unknown vulnerability in Citrix NetScaler, tracked as CVE-2026-88772, to deploy custom web shells and tunneling malware. The attackers reportedly gain root access, steal credentials, and move into victims' internal networks. Security teams are urged to check exposed NetScaler appliances for signs of compromise and apply patches as they become available.
- 2Citrix NetScaler Flaw Used to Create Superuser Accountsโ๐ Security News Digest - 2026-10-01 ๐ 10 updates from 3 sources: ๐น The Hacker News: Citrix NetScaler Post-Exploitation P
Security reports detail post-exploitation activity targeting Citrix NetScaler appliances, where attackers deploy payloads that create superuser accounts and disguise web shells as CSS-like URLs to evade detection. The technique raises concerns for organisations running NetScaler gateways, as compromised devices may grant persistent privileged access. Administrators are advised to review devices for unexpected accounts and unusual URL patterns.
- 3Sygnia Warns of Actively Exploited NetScaler Vulnerabilitiesโ(sygnia.co) Urgent Advisory: Actively Exploited Critical Vulnerabilities in NetScaler ADC and Gateway Appliances In brie
Cybersecurity firm Sygnia has issued an urgent advisory warning that critical vulnerabilities in Citrix NetScaler ADC and Gateway appliances are being actively exploited in the wild. The firm is urging organizations using these appliances to patch immediately and review their systems for signs of compromise. Security practitioners are sharing the alert widely as exploited edge-device flaws remain a common entry point for attackers.
- 4Critical Citrix NetScaler flaw exploited in the wild since Septemberโ๐ค CVE-2026-88772 (CVSS 9.5): DTLS memory overflow in Citrix NetScaler ADC/Gateway lets unauthenticated attackers reach s
A critical vulnerability, CVE-2026-88772 with a CVSS score of 9.5, has been disclosed in Citrix NetScaler ADC and Gateway products. The DTLS memory overflow allows unauthenticated attackers to achieve shellcode execution. According to Mandiant and Google Threat Intelligence, it has been actively exploited since September to gain root access and deploy the WHIPSHOT and SLAPSHOT malware. Administrators are urged to patch immediately.
- 5Mandiant exposes Citrix NetScaler zero-day exploits by suspected state actorsโReward: You've received a slightly damp Certificate of Participation and a complimentary Incident Response Invoice! http
Mandiant researchers have exposed zero-day exploits targeting Citrix NetScaler devices, attributed to suspected state-backed actors. The discovery is circulating in security circles alongside sardonic commentary, with one poster joking about receiving a 'Certificate of Participation' and a hefty incident response invoice โ a nod to the costly emergency patching and forensics organizations now face if their NetScaler appliances were compromised.
- 6Two Critical Citrix NetScaler Zero-Days Exploited in the Wildโโ ๏ธ CRITICAL: Dual NetScaler Zero-Days Trigger Chaos for Citrix Customers Two critical zero-day vulnerabilities in Citrix
Security researchers report two critical zero-day vulnerabilities in Citrix NetScaler that are being actively exploited. Attackers can gain broad network access on affected systems, with default configurations said to be especially exposed. Citrix customers are urged to check their appliances and apply mitigations immediately as details of the flaws spread through the cybersecurity community.
- 7New Citrix NetScaler Preauth Memory Overflow Bug DisclosedโHere We Go Again (Citrix NetScaler DTLS Preauth Memory Overflow CVE-2026-88772) https:// packetstorm.news/news/view/442
A pre-authentication memory overflow vulnerability, tracked as CVE-2026-88772, has been disclosed affecting Citrix NetScaler devices via DTLS. The flaw is drawing comparisons to earlier NetScaler security crises, with security commentators reacting to yet another remotely exploitable issue in widely deployed enterprise appliance software. Administrators are expected to scrutinise patch guidance while details of exploitation and severity remain limited.
- 8Citrix NetScaler zero-days actively exploited, Google warnsโ(cloud.google.com) Active Exploitation of Zero-Day Vulnerabilities in Citrix NetScaler ADC and Gateway Appliances: Analy
Google Cloud security researchers report active exploitation of two zero-day vulnerabilities, CVE-2026-88772 and CVE-2026-88771, in Citrix NetScaler ADC and Gateway appliances. Their analysis outlines defense strategies for organizations running the affected appliances, which are widely used for application delivery and secure remote access. Administrators are urged to review the guidance and protect their deployments promptly.
- 9New Citrix NetScaler preauth memory overflow vulnerability disclosedโNew. WatchTower: Here We Go Again (Citrix NetScaler DTLS Preauth Memory Overflow CVE-2026-88772) https:// labs.watchtowr
Security researchers at WatchTower Labs have published details of a new vulnerability in Citrix NetScaler, tracked as CVE-2026-88772. The flaw is a memory overflow in the handling of DTLS traffic that can be triggered before authentication, meaning attackers may be able to exploit it without valid credentials. The disclosure follows another Citrix NetScaler vulnerability reported just the day before, prompting frustration among security professionals that the product continues to produce serious remotely exploitable flaws.