Loading vulnerability…
CVE-2026-13474 is a high-severity denial-of-service vulnerability in NetScaler ADC and NetScaler Gateway caused by improper memory lifecycle handling when processing malformed HTTP/2 requests. The issue is described as a missing release of memory after effective lifetime, resulting in memory not being freed correctly during HTTP/2 request handling. It affects deployments where HTTP/2 is enabled in an HTTP Profile that is associated with a NetScaler virtual server of type load balancing, content switching, or VPN, or with a configured service. Repeated delivery of crafted malformed HTTP/2 traffic can exhaust resources and destabilize the appliance.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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 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.
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.
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A named vulnerability included in Citrix's NetScaler security bulletin referenced by the content.
A NetScaler-specific denial-of-service exposure related to the HTTP/2 Bomb technique affecting Citrix NetScaler ADC and NetScaler Gateway.
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.
The NetScaler-specific tracking identifier for the HTTP/2 Bomb denial-of-service issue affecting NetScaler deployments.
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.