CVE-2026-120861
Received Received - Intake

Memory Overflow in Citrix NetScaler GSLB

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: NetScaler

Description
Memory overflow / improper handling in GSLB and geolocation (MEP, static-proximity, config-sync) can lead to unpredictable or erroneous behavior or Denial of Service in Citrix NetScaler

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-120861
EUVD
EUVD-2026-124908

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
citrix netscaler *

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Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability involves a memory overflow or improper handling in GSLB and geolocation features of Citrix NetScaler. Specifically, issues in MEP, static-proximity, and config-sync can cause unpredictable behavior or Denial of Service.

Impact Analysis

The vulnerability may lead to system instability, crashes, or service disruptions due to memory overflow or improper handling. This can result in downtime or degraded performance for affected Citrix NetScaler deployments.

Mitigation Strategies

Apply the latest security patches or updates from Citrix for NetScaler to address memory overflow and improper handling in GSLB and geolocation components. Disable or restrict access to vulnerable services like MEP, static-proximity, and config-sync if not required. Monitor network traffic for unusual patterns indicating potential exploitation or Denial of Service attempts.

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