October 13, 2026

CVE Watchtower

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CVE-2026-13474NVD

Vulnerability Summary

Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler
Severity Level
UNKNOWN
Published Date
Jun 30, 2026
Last Modified
Jun 30, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.47%Probability
Root Weakness (CWE)
CWE-401: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 8.7 (HIGH)
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)None
Integrity (Vulnerable System)None
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)Low

Affected & Patched Versions

Affected Versions
  • NetScaler ADC >= 14.1 and < 72.61
  • NetScaler ADC >= 13.1 and < 63.18
  • NetScaler ADC >= 14.1 FIPS and < 72.61
  • NetScaler ADC >= 13.1 FIPS and NDcPP and < 37.272
  • NetScaler Gateway >= 14.1 and < 72.61
  • NetScaler Gateway >= 13.1 and < 63.18
Patched Versions
  • NetScaler ADC 72.61
  • NetScaler ADC 63.18
  • NetScaler ADC 37.272
  • NetScaler Gateway 72.61
  • NetScaler Gateway 63.18
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References