Unauthenticated RCE in Citrix NetScaler ADC and Gateway
CVE-2025-7775 is a critical memory overflow vulnerability in Citrix NetScaler ADC and NetScaler Gateway that can lead to remote code execution and/or denial of service. The flaw affects only specific appliance configurations identified by Citrix: NetScaler configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, or RDP Proxy) or as an AAA virtual server; LB virtual servers of type HTTP, SSL, or HTTP_QUIC bound with IPv6 services or service groups bound with IPv6 servers; LB virtual servers of the same types bound with DBS IPv6 services or service groups bound with IPv6 DBS servers; or a CR virtual server with type HDX. Citrix and multiple secondary reports describe the issue as exploitable without authentication, and Citrix stated exploitation was observed prior to public advisory and patch release. The vulnerable branches include NetScaler ADC and Gateway 14.1 before 14.1-47.48, 13.1 before 13.1-59.22, NetScaler ADC 13.1-FIPS/NDcPP before 13.1-37.241, and NetScaler ADC 12.1-FIPS/NDcPP before 12.1-55.330; standard 12.1 and 13.0 releases are end-of-life and remain vulnerable.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 4 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
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.
Recent activity
221 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A NetScaler vulnerability that the content says has come under active exploitation in the wild.
A previously disclosed NetScaler vulnerability referenced as having been repeatedly exploited by threat actors.
A previously disclosed NetScaler vulnerability referenced as having been repeatedly exploited by threat actors.
A Citrix NetScaler ADC/Gateway memory overflow vulnerability leading to RCE and/or DoS, confirmed exploited in the wild.
The version that knows your environment.
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.