Memory overflow DoS in Citrix NetScaler ADC and NetScaler Gateway Gateway/AAA virtual server
CVE-2026-8452 is a memory overflow vulnerability in Citrix NetScaler ADC and NetScaler Gateway. The flaw affects appliances when they are configured as a Gateway or as an AAA virtual server, including SSL VPN, ICA Proxy, CVPN, and RDP Proxy deployments. Successful triggering of the memory overflow can lead to unpredictable or erroneous behavior and denial of service. The provided content does not identify the specific vulnerable function or code path beyond the affected Gateway/AAA roles.
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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 1 candidate 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
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity vulnerability in Citrix NetScaler ADC and NetScaler Gateway related to improper memory handling and insufficient input validation that can be exploited to cause denial-of-service or memory overflow conditions.
A high-severity NetScaler vulnerability fixed by Citrix; the article groups it among out-of-bounds read, memory overflow, and arbitrary file read bugs but does not map the exact bug type to this CVE.
A memory overflow vulnerability in Citrix NetScaler that can cause unpredictable behavior or denial of service when configured as a Gateway or AAA virtual server.
A critical vulnerability addressed by Citrix in NetScaler ADC, NetScaler Gateway, and related FIPS/NDcPP editions.
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.