# CVE-2026-82550: Linux Foundation Magma NGSetupRequest improper input validation

Source: https://junglewise.ai/threats/cve-2026-82550-linux-foundation-magma-ngsetuprequest-improper-input-validation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-30. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-82550 · Severity: medium · CVSS 5.3 · Published 2026-08-30

Magma is an open-source platform used by telecom operators to manage mobile networks and provide connectivity services. A flaw in the AMF (Access Management Function) component causes it to reject valid network setup requests containing certain optional parameters, resulting in denial of service and potential interoperability issues when communicating with compliant base stations.

Technologies: [Linux Foundation Magma](https://junglewise.ai/threats/technologies/magma). Vendors: [Linux Foundation](https://junglewise.ai/threats/vendors/linux-foundation).

## Quick answers

**Is CVE-2026-82550 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82550 being exploited in the wild.

**How severe is CVE-2026-82550?** Medium severity, with a CVSS score of 5.3, published 30 August 2026.

**Which products and versions are affected?** Linux Foundation Magma 1.9.0.

**Is there a fix for CVE-2026-82550?** 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-2026-82550 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-82550?** Check whether you run Linux Foundation Magma at an affected version. 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

The vulnerability is an improper input validation flaw in the NGSetupRequest handler of Magma's AMF component. When processing an NGAP (NG Application Protocol) message with the NG-IoT-DefaultPagingDRX parameter set, the AMF decoder throws an error instead of ignoring the optional field as per specification. This occurs even though the parameter has its Criticality flag set to "ignore," meaning compliant implementations should proceed without error. An attacker or non-compliant gNB can trigger this decoder error remotely via crafted SCTP-transported NGAP messages, causing the AMF to reject legitimate setup requests and disrupting network connectivity.

## Affected products

- Linux Foundation Magma 1.9.0

## Timeline

- 2026-07-15: disclosed
- 2026-08-30: advisory

## References

- [https://github.com/magma/magma/issues/16023](https://github.com/magma/magma/issues/16023)
- [https://vuldb.com/cve/CVE-2026-82550](https://vuldb.com/cve/CVE-2026-82550)

## Related threats

- [Linux Foundation Magma gNB termination context cleanup denial of service](https://junglewise.ai/threats/cve-2026-82552-linux-foundation-magma-gnb-termination-context-cleanup-denial-of)
- [Linux Foundation Magma NGSetup Handler state issue](https://junglewise.ai/threats/cve-2026-82551-linux-foundation-magma-ngsetup-handler-state-issue)
- [Linux Foundation Magma improper integrity validation in SecurityModeComplete handler](https://junglewise.ai/threats/cve-2026-82549-linux-foundation-magma-improper-integrity-validation-in)
- [Linux Foundation Magma information disclosure in InitialUEMessage](https://junglewise.ai/threats/cve-2026-82548-linux-foundation-magma-information-disclosure-in-initialuemessage)
- [Linux Foundation Magma improper authentication in Registration Complete message handler](https://junglewise.ai/threats/cve-2026-82547-linux-foundation-magma-improper-authentication-in-registration)