High

Access control bypass in Citrix NetScaler Management Interface

IdentifiersCVE-2025-5349CWE-284

CVE-2025-5349 is an improper access control vulnerability affecting the NetScaler Management Interface in Citrix NetScaler ADC and NetScaler Gateway. According to the provided content, exploitation allows bypass of management-plane access restrictions and can lead to unauthorized access to the NSIP, Cluster Management IP, and local GSLB Site IP. The issue is described by Citrix and downstream advisories as an access control bypass on the management interface rather than a memory corruption or input parsing flaw. The vulnerable condition affects supported NetScaler ADC/Gateway releases prior to the vendor-fixed builds referenced in June 2025 advisories.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can expose the appliance management plane to unauthorized parties, allowing access to management-reachable interfaces including the NSIP, Cluster Management IP, and local GSLB Site IP. This can undermine administrative isolation of the appliance and may enable follow-on administrative actions, configuration access, or broader compromise of the affected NetScaler deployment depending on what services and privileges are reachable through those interfaces.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure of the NetScaler Management Interface by strictly limiting network access to trusted administrative hosts and management networks only. Review whether NSIP, Cluster Management IP, and local GSLB Site IP are reachable from untrusted networks and remove such exposure. Use layered access controls such as firewalls or ACLs around management endpoints. Because the content does not provide a vendor-issued configuration workaround specific to CVE-2025-5349 beyond upgrading, patching remains the primary mitigation.

Remediation

Patch, then assume compromise.

Upgrade affected NetScaler ADC and NetScaler Gateway instances to a fixed release/build provided by Citrix. The provided content identifies fixed versions including 14.1-43.56 and later, 13.1-58.32 and later, 13.1-37.235-FIPS/NDcPP and later, and 12.1-55.328-FIPS and later. Some later guidance references newer recommended builds such as 14.1-47.46, 13.1-59.19, and 13.1-37.236-FIPS/NDcPP in the context of multiple June 2025 NetScaler issues. End-of-life 12.1 and 13.0 releases should be migrated to supported fixed versions. NetScaler Console guidance in the content states remediation is a single-step upgrade workflow to a release containing the fix.

PUBLIC EXPLOITS

Exploits

No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.

VALID 0 / 1 TOTALView more in app

All candidate exploits were filtered out by Mallory's validation.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

Citrix SystemsNetscaler Application Delivery Controllerapplication

Citrix SystemsNetscaler Gatewayapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

49 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

49 SOURCESView more in app

netscaler docsNews

Mar 11, 2026

Identify and remediate vulnerabilities for CVE-2025-5349

A vulnerability affecting NetScaler instances that is remediated by upgrading to a fixed release/build.

aws security blogNews

Nov 12, 2025

Amazon discovers APT exploiting Cisco and Citrix zero-days | AWS Security Blog

A vulnerability referenced in the NetScaler ADC and NetScaler Gateway security bulletin.

ncscNews

Nov 1, 2025

Casus: Citrix kwetsbaarheid | NCSC

A Citrix NetScaler ADC vulnerability for which the NCSC published a security advisory; it is under investigation for possible misuse along with other Citrix flaws.

medium knownsec404teamNews

Jul 21, 2025

Root Cause Analysis of the CitrixBleed 2 (CVE-2025-5777) Vulnerability | by Knownsec 404 team | Medium

A Citrix vulnerability mentioned only as one of two flaws fixed by Citrix on June 17, 2025. No technical details are provided in the content.

+6 more in the timeline

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity38