Hvězdička u CVE znamená, že jsem to číslo vytáhl z širšího textu článku.
Neukazuju u něj proto KEV, EPSS ani CVSS, a to preventivně, protože článek se na něj mohl
jen odkazovat, třeba jako na starší kauzu.
Classification: Critical, Solution: Official Fix, Exploit Maturity: Not Defined, CVSSv3.1: 9.8, CVEs: CVE-2026-109618, CVE-2026-109619, Summary: This Security Alert addresses CVE-2026-109618 and CVE-2026-109619. These vulnerabilities, known as PHP2Shell, allow for unauthenticated remote code execution in PHP. Oracle strongly recommends that customers apply the available security patches without delay. The Security Alert advisory will continue to be updated as additional product patches become…
Upozorňujeme na aktivně zneužívané zranitelnosti CVE-2026-88771 a CVE-2026-88772 v produktu Citrix Netscaler, které umožňují vzdálené spuštění kódu. Doporučujeme bezodkladně aktualizovat na verzi 14.1-73.37, 13.1-64.23, 14.1-73.37 FIPS nebo 13.1-37.279 a novější podle používané produktové řady. Dále doporučujeme prověřit indikátory kompromitace, jelikož aktualizace nemusí kompromitaci odstranit. Zranitelnosti Zranitelnost CVE-2026-88771 spočívá v nesprávném ověřování vstupů a umožňuje…
Citrix ha rilasciato aggiornamenti di sicurezza per risolvere 3 vulnerabilità, di cui una con gravità "alta", in UniconOS, sistema operativo per endpoint precedentemente noto come "eLux", utilizzato principalmente in ambienti di virtualizzazione desktop (VDI/DaaS). Tale vulnerabilità, qualora sfruttata, potrebbe consentire ad un attaccante locale, autenticato con privilegi limitati, di elevare i propri privilegi sul sistema interessato.
Risolte 4 vulnerabilità con gravità "alta" in XenServer, hypervisor basato su Xen che permette di creare, eseguire e gestire macchine virtuali su un server fisico. Tali vulnerabilità, qualora sfruttate, potrebbero consentire ad utenti malintenzionati presenti all'interno di macchine virtuali guest di causare interruzioni del servizio o compromettere il sistema host, aggirando le restrizioni di sicurezza.
De multiples vulnérabilités ont été découvertes dans les produits Citrix. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, une élévation de privilèges et un déni de service à distance.
Serial number: AV26-1034 Date: October 13, 2026 As of October 13, 2026, Citrix is affected by vulnerabilities in the following products: UniconOS Prior to 2603 LTSR CU2 Prior to 2607.2 CR XenServer Version 8.4 XenServer Version 9 The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available. Citrix UniconOS Security Bulletin CVE-2026-53562, CVE-2026-53563, and CVE-2026-53564 XenServer Security Update for CVE-2026…
For the latest discoveries in cyber research for the week of 12th October, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Denmark’s government has disclosed a breach involving its Central Register of Persons after unauthorized individuals exploited access provided to a private supplier. The incident reportedly exposed personal information, including names, addresses, and identification numbers, associated with approximately 8.8 million individuals in the national…
Serial Number: AV26-1023 Date: October 9, 2026 NetScaler ADC and NetScaler Gateway Prior to 13.1-64.29 Prior to 14.1-73.46 NetScaler ADC FIPS Prior to 14.1-73.46 FIPS Prior to 13.1-37.283 FIPS & NDcPP The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available. Citrix NetScaler ADC and Citrix NetScaler Gateway Security Bulletin for CVE-2026-107406 Citrix Security Advisories
09. Oktober 2026 Beschreibung Citrix hat ein Security Bulletin zu einer kritischen Sicherheitslücke in Citrix NetScaler ADC und Citrix NetScaler Gateway veröffentlicht. Es handelt sich um einen Speicherüberlauf, der zur Ausführung von beliebigem Code aus der Ferne (Remote Code Execution) oder zu einem Denial-of-Service (DoS) führen kann. Voraussetzung ist, dass das Gerät als SAML Service Provider (SP) oder SAML Identity Provider (IdP) konfiguriert ist. Betroffen sind auch Systeme, die bereits…
Citrix has warned IT administrators to patch systems immediately against a new critical vulnerability affecting NetScaler ADC networking appliances and NetScaler Gateway secure remote access solutions. [...]
Citrix heeft een kwetsbaarheid verholpen in NetScaler ADC en Gateway producten wanneer deze zijn geconfigureerd als SAML Service Provider (SP) of Identity Provider (IdP). De kwetsbaarheid betreft een geheugenoverflow die optreedt tijdens de verwerking van SAML. Deze kan op afstand worden geactiveerd, waardoor een aanvaller willekeurige code kan uitvoeren of een denial of service kan veroorzaken. De kwetsbaarheid ontstaat door onjuiste geheugenafhandeling tijdens SAML-verwerking.
Welcome to this week’s edition of the Threat Source newsletter. My name is Pierre Cadieux, and I’ll be helping contribute to these newsletters. A little about me: I’ve been working in the cybersecurity industry in many roles over the past 20+ years, first focusing on endpoint security, policies, and firewalls, then moving to risk management and compliance, disaster recovery, and investigations. I spent about 15 years as a consultant working across many well-known consultancy firms and…
Citrix confirmed late on Friday that it was “tracking a newly observed issue” related to some customer-managed NetScaler deployments but claimed the problem was not connected to vulnerabilities reported last week that also caused alarm among cybersecurity experts.
For the latest discoveries in cyber research for the week of 5th October, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Arizona’s state court system has suffered a phishing-led cyberattack after an employee clicked a malicious link. Attackers copied backup files containing protective-order records and more than 150,000 Foster Care Review Board reports dating back to 2010, exposing personal and case-related information belonging to current and former participants.…
Citrix heeft een kwetsbaarheid verholpen in NetScaler ADC en NetScaler Gateway. De kwetsbaarheid betreft een geheugenoverflow in versies van NetScaler ADC en NetScaler Gateway die ouder zijn dan 14.1-73.41 en 13.1-64.28. Deze kwetsbaarheid kan leiden tot een Denial of Service (DoS) waarbij de normale beschikbaarheid van de dienst wordt verstoord.
Cybersecurity firms say attackers exploited the Citrix NetScaler CVE-2026-88772 zero-day to deploy custom web shells and tunneling malware, gain root access, steal credentials, and spread into internal networks. [...]
Incident responders began warning of potential vulnerabilities in NetScaler Gateway products on Saturday before cybersecurity agencies in the Netherlands, U.S. and U.K. released advisories on Sunday confirming vulnerabilities. Citrix itself confirmed eight new vulnerabilities.
Serial number: AV26-965Date: September 28, 2026 As of September 27, 2026, Citrix is affected by vulnerabilities in the following products: NetScaler ADC and NetScaler Gateway 14.1 Prior to 14.1-73.37 NetScaler ADC and NetScaler Gateway 13.1 Prior to 13.1-63.23 NetScaler ADC FIPS Prior to 14.1-73.37 FIPS NetScaler ADC FIPS and NDcPP Prior to 13.1-37.279 On September 27, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-88771 and CVE-2026-88772 to their Known Exploited…
The NCSC is urging UK organisations to promptly mitigate vulnerabilities affecting Citrix NetScaler ADC and Gateway, two of which are being actively exploited.
OverviewOn September 27, 2026, Citrix disclosed eight new vulnerabilities affecting NetScaler ADC and NetScaler Gateway, including two critical remote code execution (RCE) vulnerabilities: CVE-2026-88771 and CVE-2026-88772. Both of these RCE vulnerabilities carry a critical CVSSv4 score of 9.5, and both have been confirmed as being actively exploited in the wild as zero-days prior to the vendor disclosure. CVE-2026-88771 affects vulnerable NetScaler deployments in their default configuration,…
The Cybersecurity and Infrastructure Security Agency (CISA) has ordered U.S. government agencies over the weekend to secure their systems against attacks exploiting two critical Citrix NetScaler vulnerabilities. [...]
On 24 September 2026, a malicious cyber actor (MCA) used 149.104.78.141 to attempt zero-day exploitation against a Citrix NetScaler Gateway. At the time, there were no CVE-specific detections for the attack due to it occurring pre-disclosure. However, GreyNoise still detected and labeled the activity as fundamentally malicious within seconds due to behavioral detections.
On 27 September 2026, Citrix published a security bulletin addressing 8 vulnerabilities affecting customer-managed Citrix NetScaler ADC and Citrix NetScaler Gateway, among which 2 critical unauthenticated Remote Code Execution (RCE) vulnerabilities. Citrix has confirmed active exploitation of these 2 critical vulnerabilities in the wild. CERT-EU recommends updating affected software and running a compromise assessment on those exposed on the internet.
Two unpatched Citrix NetScaler zero-day vulnerabilities are reportedly being exploited in attacks, with cybersecurity agencies, security researchers, and IT providers privately warning organizations about the flaws ahead of patches expected next week. [...]
There are reportedly two unpatched zero-day Citrix NetScaler vulnerabilities capable of enabling remote code execution that have been actively exploited in the wild, with no patches available at this time.Key takeawaysReports indicate that there are two critical zero-day vulnerabilities in Citrix NetScaler.The reports originate from a pre-notification sent out ahead of public disclosure, so there are currently no specific details about these flaws and no patches available.This post will be…
Citrix har publicerat information om en kritisk sårbarhet som påverkar Citrix NetScaler ADC och NetScaler Gateway. Sårbarheten, CVE-2026-19490, har fått CVSS v.4-klassning på 9.3. [1, 2]
CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2025-25249 Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability CVE-2026-19490 Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability CVE-2026-87491 Google Chromium V8 Out of Bounds Write Vulnerability CVE-2026-20079 Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel…
De multiples vulnérabilités ont été découvertes dans Citrix Workspace app. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.
CISA has ordered U.S. government agencies to patch their Citrix NetScaler appliances against an actively exploited remote code execution vulnerability by Saturday. [...]
A joint Tenable-SentinelOne analysis of 93 CVE-actor attribution pairs reveals that both state-sponsored actors and cybercriminals independently converge on the same edge infrastructure. Special thanks to SentinelOne® Incident Readiness & Response for their contributions to this publication.It is the shared attack surface where state-sponsored threat actors and financially motivated criminal groups independently converge — not the province of a single adversary category, and not exclusively a…
CISA has added six new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2015-3246 Red Hat Libuser Race Condition Vulnerability CVE-2015-5287 Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability CVE-2019-1068 Microsoft SQL Server Remote Code Execution Vulnerability CVE-2021-23758 Ajax.NET Professional Deserialization of Untrusted Data Vulnerability CVE-2022-0995 Linux Kernel Out-of-Bounds Write Vulnerability…
CISA added CVE-2026-8452 to the Known Exploited Vulnerabilities catalog. Affected product: Citrix NetScaler ADC and NetScaler Gateway. Remediation due date: 2026-08-29.
Citrix has warned customers to immediately secure their systems against two vulnerabilities affecting NetScaler Gateway secure remote access solutions and NetScaler ADC networking appliances. [...]
On 19 August 2026, Citrix published a security advisory addressing multiple critical vulnerabilities in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway). CERT-EU recommends updating affected devices as soon as possible.
Citrix heeft kwetsbaarheden verholpen in NetScaler ADC en NetScaler Gateway die verband houden met onvoldoende invoervalidatie, onjuiste toegangscontrole en het onjuist vrijgeven van geheugen. De kwetsbaarheden met de kenmerken CVE-2026-8451 en CVE-2026-10817 ontstaan door onvoldoende invoervalidatie, waarbij de software invoergroottes en -grenzen niet correct controleert. Dit kan leiden tot geheugenoverlezingen, wat kan resulteren in ongeautoriseerde openbaarmaking van gevoelige informatie,…
Huntress has observed a series of strikingly similar intrusions beginning with CitrixBleed 2 exploitation, employing novel local privilege escalation techniques, and ending in Dragonforce ransomware.
For the latest discoveries in cyber research for the week of 6th July, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES River Bank & Trust, a US financial institution, has experienced a ransomware incident after an unauthorized actor accessed the network of parent company River Financial Corporation on June 16. The bank found ransomware on portions of its server environment and is assessing whether personal data was accessed or exfiltrated. Indra Group, a Spanish…
Rilevate nuove vulnerabilità di sicurezza nei prodotti NetScaler ADC e NetScaler Gateway di Citrix. Tra queste si evidenziano la CVE-2026-8451 e la CVE-2026-8452, per le quali sono disponibili in rete Proof of Concept (PoC) pubblici.
UK organisations encouraged to take immediate action to mitigate two recently disclosed vulnerabilities affecting Citrix NetScaler ADC and Citrix NetScaler Gateway.
On 23 March 2026, Citrix published a security advisory addressing multiple vulnerabilities affecting NetScaler ADC and NetScaler Gateway. These vulnerabilities may lead to sensitive information disclosure and user session mix-up under specific configurations. At the time of writing, there is no public evidence of active exploitation. It is strongly recommended updating affected gateways, prioritising internet-facing assets. It is also recommended to preserve evidence for further investigation.