CVE-2026-134748.7HighCWE-401

CVE-2026-13474: Denial of service via malformed HTTP/2 requests

NetScaler · ADC

Vendor fix available · Affected: NetScaler ADC · Exploitation: not established

ExploitationNot established

Not in CISA KEV as of catalogue 2026.11.13 (13 Nov)

In CISA KEV: not seen
Exploited (reported): not seen
Scanning observed: not seen
Proof of concept public: not seen
Not establishedNothing in the sources we check

0.6%probability of exploitation in the next 30 days

46th percentile

050100

Higher than 46% of scored CVEs

8.7HighCVSS 4.0

LowMediumHighCrit.

DescriptionNVD

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

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Missing Release of Memory after Effective Lifetime · Denial of Service
Vendor: NetScaler
Published: June 2026
Band: Unlikely (under 1%), June 2026

Coverage1 article · 1 outlet

First in our coverage: SecurityWeek, 1 Jul.

1 Jul 11:51
Citrix fixes critical NetScaler flaws after HTTP/2 Bomb alert
SecurityWeek · first in our coverage · mentions it in passing

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