CVE-2025-7775Known exploitationNetwork attack vector

Remote code execution via undisclosed memory overflow

Published Aug 26, 2025 · Updated Feb 26, 2026

Memory overflow in NetScaler ADC and NetScaler Gateway allows remote attackers to execute code or crash affected appliances. The vendor identifies a memory overflow but has not disclosed the affected component, request field, or precise unsafe operation. No authentication is required, but reachability depends on a Gateway or AAA virtual server, an HDX cache-redirection server, or specified IPv6 load-balancer bindings.

CVSS severity9.2
Critical
EPSS probability19.63%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory overflow in NetScaler ADC and NetScaler Gateway allows remote attackers to execute code or crash affected appliances. The vendor identifies a memory overflow but has not disclosed the affected component, request field, or precise unsafe operation. No authentication is required, but reachability depends on a Gateway or AAA virtual server, an HDX cache-redirection server, or specified IPv6 load-balancer bindings.

The record

CVE
CVE-2025-7775
Published
Aug 26, 2025
Updated
Feb 26, 2026
Vendor
Cloud Software Group
Product
NetScaler Gateway
Classifications
CWE-119, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.1 FIPS and NDcPP <55.330
  2. Affected versionversion=13.1 <59.22
  3. Affected versionversion=13.1 FIPS and NDcPP <37.241
  4. Affected versionversion=14.1 <47.48

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cloud Software Group · NetScaler Gatewayversion=12.1 FIPS and NDcPP <55.330; version=13.1 <59.22; version=13.1 FIPS and NDcPP <37.241; version=14.1 <47.48
Cloud Software Group · NetScaler ADCversion=12.1 FIPS and NDcPP <55.330; version=13.1 <59.22; version=13.1 FIPS and NDcPP <37.241; version=14.1 <47.48

Published CVSS scores

9.2Cloud Software GroupCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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