# CVE-2026-8783: omec-project AMF null pointer dereference in NGAP dispatcher

Source: https://junglewise.ai/threats/cve-2026-8783-omec-project-amf-null-pointer-dereference-in-ngap-dispatcher  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-18. Updated: 2026-05-28  
License: CC BY 4.0 with a link back

CVE-2026-8783 · Severity: medium · CVSS 4.3 · Published 2026-05-18

The Access and Mobility Management Function (AMF) in the omec-project, a core component of 5G mobile networks, is vulnerable to a remote crash. An attacker can send a specially crafted network message that causes the service to stop responding. This results in a denial-of-service condition, potentially disrupting mobile connectivity for users relying on the affected network infrastructure.

Technologies: [github.com/omec-project/amf (Go)](https://junglewise.ai/threats/technologies/github-com-omec-project-amf), [OMEC Project AMF](https://junglewise.ai/threats/technologies/amf). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [OMEC Project](https://junglewise.ai/threats/vendors/omec-project).

## Quick answers

**Is CVE-2026-8783 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8783 being exploited in the wild.

**How severe is CVE-2026-8783?** Medium severity, with a CVSS score of 4.3, published 18 May 2026.

**Which products and versions are affected?** github.com/omec-project/amf (Go) < 2.2.0, SEMVER:introduced=0, SEMVER:introduced=0,fixed=2.2.0; OMEC Project AMF < 2.2.0, up to 2.1.3-dev.

**Is there a fix for CVE-2026-8783?** Yes. github.com/omec-project/amf (Go): upgrade to 2.2.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-8783 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-8783?** Check whether you run github.com/omec-project/amf (Go) or OMEC Project AMF 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.

## How to fix

- github.com/omec-project/amf (Go): upgrade to 2.2.0 or later

  ```sh
  go get github.com/omec-project/amf@v2.2.0
  ```


## Technical details

A null pointer dereference exists in the omec-project AMF (Access and Mobility Management Function) within the UERadioCapabilityCheckResponse function in ngap/dispatcher.go. The vulnerability is triggered when the NGAP dispatcher fails to properly validate malformed or incomplete NGAP PDUs, leading to a panic during message handling. A remote attacker with the ability to send NGAP messages to the AMF can exploit this to cause a denial-of-service (DoS) by crashing the service. The issue was addressed in version 2.2.0 by implementing comprehensive nil-pointer and bounds checks across the NGAP and NAS handlers.

## Affected products

- omec-project amf < 2.2.0

## Identifiers

- CVE-2026-8783
- GHSA-6v92-ph9p-hrpc
- GO-2026-5190

## Timeline

- 2026-04-21: patched: Fix merged in pull request 666
- 2026-04-23: disclosed: Public issue report with reproduction steps published
- 2026-05-18: advisory: GitHub Advisory and CVE published

## References

- [https://github.com/omec-project/amf/issues/675](https://github.com/omec-project/amf/issues/675)
- [https://github.com/omec-project/amf/pull/666](https://github.com/omec-project/amf/pull/666)
- [https://github.com/omec-project/amf](https://github.com/omec-project/amf)
- [https://github.com/omec-project/amf/releases/tag/v2.2.0](https://github.com/omec-project/amf/releases/tag/v2.2.0)
- [https://vuldb.com/submit/811655](https://vuldb.com/submit/811655)

## Related threats

- [omec-project amf denial of service in NGAP handler](https://junglewise.ai/threats/cve-2026-14624-omec-project-amf-denial-of-service-in-ngap-handler)
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