CVE-2026-120861
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
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
INFO
Published Date :
Nov. 13, 2026, 8:17 a.m.
Last Modified :
Nov. 13, 2026, 8:17 a.m.
Remotely Exploit :
Yes !
Source :
50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
Affected Products
The following products are affected by CVE-2026-120861
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 | ||||
| CVSS 4.0 | HIGH | 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 |
Solution
- Update NetScaler to a fixed version.
- Apply vendor patches for MEP, static-proximity, and config-sync.
- Review and harden GSLB and geolocation configurations.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-120861.
| URL | Resource |
|---|---|
| https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697305 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-120861 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-120861
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-120861 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-120861 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
Nov. 13, 2026
Action Type Old Value New Value Added 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 Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/120xxx/CVE-2026-120861.json">CVE-2026-120861</a> Added Reference https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697305