CISA KEV · Known exploitedHigh

CVE-2023-6548

Citrix NetScaler ADC and NetScaler Gateway

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.

CVSS
8.8
EPSS
3.19%
86.8% percentile
CISA KEV
Listed
Published
2024.01.18
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability3.19%
Technical severityCVSS 8.8

Vulnerability overview

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.

Affected product and versions

Product
Citrix NetScaler ADC and NetScaler Gateway
Affected versions
14.1, 13.1, 13.0, 13.1-FIPS, 12.1-FIPS, 12.1-NDcPP, 12.1, >= 12.1 < 12.1-55.302, >= 13.0 < 13.0-92.21, >= 13.1 < 13.1-37.176, >= 13.1 < 13.1-51.15, >= 14.1 < 14.1-12.35
Fixed versions
12.1-55.302, 13.0-92.21, 13.1-37.176, 13.1-51.15, 14.1-12.35

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

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

Due date: 2024.01.24
  1. 1
    Identify

    Confirm that Citrix NetScaler ADC and NetScaler Gateway and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-94
KEV added
2024.01.17
Ransomware use
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