# CVE-2026-107413: Citrix NetScaler ADC and Gateway memory overflow in SAML authentication

Source: https://junglewise.ai/threats/cve-2026-107413-memory-overflow-in-saml-authentication-can-lead-to-unpredictable  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-13. Updated: 2026-11-13  
License: CC BY 4.0 with a link back

CVE-2026-107413 · Severity: info · Published 2026-11-13

Citrix NetScaler ADC and Gateway are application delivery controllers used to manage traffic to corporate applications and provide secure remote access. A memory overflow in the SAML authentication component could allow attackers to trigger unpredictable system behavior, crash the service, or bypass authentication controls. This could result in denial of service or potential account compromise depending on how the overflow is exploited.

Technologies: [Citrix NetScaler ADC](https://junglewise.ai/threats/technologies/netscaler-adc), [Citrix NetScaler Gateway](https://junglewise.ai/threats/technologies/gateway). Vendors: [Citrix](https://junglewise.ai/threats/vendors/citrix).

## Quick answers

**Is CVE-2026-107413 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-107413 being exploited in the wild.

**How severe is CVE-2026-107413?** Informational severity, published 13 November 2026.

**Which products and versions are affected?** Citrix NetScaler ADC; Citrix NetScaler Gateway.

**Is there a fix for CVE-2026-107413?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-107413 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-107413?** Check whether you run Citrix NetScaler ADC or Citrix NetScaler Gateway. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A memory overflow vulnerability exists in the SAML authentication module of Citrix NetScaler ADC and Gateway. The vulnerability can be triggered through malformed SAML authentication requests and may lead to denial of service or unpredictable behavior. An attacker can send a specially crafted SAML message without authentication to trigger the overflow, potentially causing a crash or memory corruption.

## Affected products

- Citrix NetScaler ADC
- Citrix NetScaler Gateway

## Timeline

- 2026-11-13: disclosed

## References

- [https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697305](https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697305)

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