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CVE-2026-19490: Kritisk sårbarhet i Citrix NetScaler ADC och NetScaler Gateway

8 karet z 18 položek · v celém archivu · celý přehled CZ · EN/orig

CVE-2026-19490

KEV ✓ EPSS 0.23 EPSS k 18. 10. 2026 náprava do 12. 9. 2026

Hodnocení závažnosti

9.3 CVSS 4.0 NetScaler

útok odkudkoli z internetu žádné ochrany se neobcházejí funguje v běžném nastavení bez přihlášení bez zásahu uživatele
dopad plný únik dat úplná změna dat úplný výpadek
přesah únik části dat i v okolních systémech dílčí změna dat i v okolních systémech částečný výpadek i v okolních systémech

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

zvyšuje závažnost mírně zvyšuje závažnost snižuje závažnost

cve.org · NVD

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. Fakta o samotném CVE jsou nahoře.

CISA orders feds to patch exploited Citrix flaws by Wednesday

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. [...]

CVE-2026-19490 * CVE-2026-3055 * CVE-2026-4368 * CVE-2026-88771 * CVE-2026-88772 * Citrix veřejná správa US

tg: zneužíváno tg: zranitelnost tg: regulace

· BleepingComputer · CISA orders feds to patch exploited Citrix flaws by Wednesday

SPOJENO PŘES CVE Citrix admins warned to shut down NetScalers over 2 exploited zero-days

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. [...]

KEV ✓ EPSS 0.23 CVSS 9.3 CVE-2026-19489 CVE-2026-19490 Citrix US CA IT NL FI FR

tg: varování tg: zneužíváno tg: zranitelnost tp: identita

· BleepingComputer · Citrix admins warned to shut down NetScalers over 2 exploited zero-days · Cyber Centre Kanada · AL26-019 - Vulnerabilities impacting Citrix NetScaler ADC and NetScaler Gateway - CVE-2026-19490 and CVE-2026-19489 · CSIRT Itálie (ACN) · Vulnerabilità in prodotti Citrix · NCSC-NL · NCSC-2026-0318 [1.00] [M/M] Kwetsbaarheden verholpen in Citrix NetScaler ADC en NetScaler Gateway · zachyceno · NCSC-FI · Citrix Netscaler ADC ja Gateway -tuotteissa kriittisiä haavoittuvuuksia · zachyceno · CERT-FR – avis · Multiples vulnérabilités dans les produits Citrix (20 août 2026)

Frequently asked questions about reported Citrix NetScaler zero-day vulnerabilities

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…

KEV ✓ EPSS 0.58 CVE-2023-6549 CVE-2025-6543 CVE-2026-19489 CVE-2026-19490 Citrix US

tg: varování tg: zneužíváno

· Tenable Research · Frequently asked questions about reported Citrix NetScaler zero-day vulnerabilities

SPOJENO PŘES CVE Kritisk sårbarhet i Citrix NetScaler ADC och NetScaler Gateway

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]

KEV ✓ EPSS 0.23 CVSS 9.3 CVE-2026-19490 Citrix SE US

tg: zneužíváno tg: zranitelnost tp: identita

· CERT-SE · Kritisk sårbarhet i Citrix NetScaler ADC och NetScaler Gateway · zachyceno · CISA KEV · Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability (CVE-2026-19490) · BleepingComputer · Critical Citrix NetScaler auth bypass now leveraged in attacks · Rapid7 · CVE-2026-19490: Critical Vulnerability Affecting Citrix NetScaler ADC and NetScaler Gateway

· zachyceno

CISA Adds Four Known Exploited Vulnerabilities to Catalog

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…

KEV ✓ EPSS 0.88 CVE-2025-25249 CVE-2026-19490 CVE-2026-20079 CVE-2026-87491 Fortinet Citrix Google Cisco veřejná správa US

tg: zneužíváno tg: zranitelnost tg: regulace

· zachyceno · CISA Advisories · CISA Adds Four Known Exploited Vulnerabilities to Catalog

24th August – Threat Intelligence Report

For the latest discoveries in cyber research for the week of 24th August, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES Latvia’s Road Traffic Safety Directorate (CSDD) has confirmed a breach affecting payment records of more than 1.2 million people – roughly two-thirds of the country’s population – as well as 200,000 organizations. The stolen data included identification numbers, license plates, payment amounts, dates and addresses. Attackers reportedly exploited a…

KEV ✓ · ransomware EPSS 0.60 CVSS 10.0 CVE-2026-12569 CVE-2026-19478 CVE-2026-19489 CVE-2026-19490 Snowflake Siemens GitLab Cisco zdravotnictví výroba a průmysl energetika vodárenství IL

· Check Point Research · 24th August – Threat Intelligence Report