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CVE-2026-4368 is a race condition in NetScaler ADC and NetScaler Gateway that can cause user session mixups. It affects appliances configured as a Gateway, including SSL VPN, ICA Proxy, CVPN, or RDP Proxy, or as an AAA virtual server. A low-privileged, already-authenticated remote attacker can exploit the race condition to obtain another user’s active session.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
65 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Citrix NetScaler vulnerability that was patched and subsequently exploited in attacks; no further technical details are provided.
A Citrix NetScaler vulnerability patched by Citrix in March and reported as subsequently exploited in attacks.
A Citrix NetScaler vulnerability referenced as a prior example of a flaw that threat actors began abusing shortly after Citrix advised patching it.
Another Citrix NetScaler vulnerability referenced as a prior example of a flaw that was later exploited in the wild.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.