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Fencer Vulns
medium 5.5

CVE-2023-6548 kev in the critical feed json

Improper Control of Generation of Code ('Code Injection') in NetScaler ADC and NetScaler Gateway allows an attacker with access to NSIP, CL…

published 2024-01-17 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-58778

cvss
5.5
version 3.1, CNA
cisa kev
Exploited
added 2024-01-17
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Improper Control of Generation of Code ('Code Injection') in NetScaler ADC and NetScaler Gateway allows an attacker with access to NSIP, CLIP or SNIP with management interface to perform Authenticated (low privileged) remote code execution on Management Interface.

Patch / fix

cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  • Cloud Software Group NetScaler ADC 12.35, 37.176, 51.15, 55.302, 92.21
  • Cloud Software Group NetScaler Gateway 12.35, 51.15, 92.21
  • citrix netscaler_application_delivery_controller 12.1-55.302, 13.0-92.21, 13.1-37.176, 13.1-51.15, 14.1-12.35
  • citrix netscaler_gateway 13.0-92.21, 13.1-51.15, 14.1-12.35

Timeline

  1. Added to CISA KEV
  2. Published
  3. CISA SSVC: exploitation active
  4. CISA patch deadline

Known exploited

Added
2 y ago
Patch by
2024-01-24 (2 y ago)
Ransomware
Not known
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor, product
Citrix, NetScaler ADC and NetScaler Gateway
CISA name
Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

  • T1055 Process Injection exploitation

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

3.19% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Cloud Software Group NetScaler ADC
  • Cloud Software Group NetScaler Gateway
  • citrix netscaler_application_delivery_controller
  • citrix netscaler_gateway

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.