# CVE-2026-9300: omec-project amf memory corruption in NGSetupRequest Handler

Source: https://junglewise.ai/threats/cve-2026-9300-omec-project-amf-memory-corruption-in-ngsetuprequest-handler  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-23. Updated: 2026-06-30  
License: CC BY 4.0 with a link back

CVE-2026-9300 · Severity: medium · CVSS 6.3 · Published 2026-05-23

The omec-project Access and Mobility Management Function (AMF), a core component of 5G mobile networks, is vulnerable to a memory corruption issue. An attacker can send specially crafted network registration requests to crash the service, potentially leading to a denial of service for mobile subscribers. This impact could disrupt connectivity and network operations for affected users.

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-2026-9300 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9300 being exploited in the wild.

**How severe is CVE-2026-9300?** Medium severity, with a CVSS score of 6.3, published 23 May 2026.

**Which products and versions are affected?** github.com/omec-project/amf (Go) < 1.7.1-0.20260421213846-34bc6724acc9, SEMVER:introduced=0,fixed=1.7.1-0.20260421213846-34bc6724acc9; OMEC Project AMF < 1.7.1-0.20260421213846-34bc6724acc9, up to 2.1.1.

**Is there a fix for CVE-2026-9300?** Yes. github.com/omec-project/amf (Go): upgrade to 1.7.1-0.20260421213846-34bc6724acc9 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-9300 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-9300?** 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 1.7.1-0.20260421213846-34bc6724acc9 or later

  ```sh
  go get github.com/omec-project/amf@v1.7.1-0.20260421213846-34bc6724acc9
  ```


## Technical details

A memory corruption vulnerability exists in the omec-project AMF (Access and Mobility Management Function) within the NGSetupRequest Handler and NAS conversion components. The flaw is triggered by improper restriction of operations within the bounds of a memory buffer (CWE-119) when handling a RegistrationRequest with an invalid SUCI (Subscription Concealed Identifier) format. Specifically, the `nasConvert.SuciToString` function can encounter an out-of-bounds index error (e.g., index -1) when attempting to convert malformed MobileIdentity data. A remote attacker with low privileges can exploit this by sending a crafted InitialUEMessage, leading to a service panic and crash. The issue is addressed in version 1.7.1-0.20260421213846-34bc6724acc9 and later.

## Affected products

- omec-project amf < 1.7.1-0.20260421213846-34bc6724acc9

## Identifiers

- CVE-2026-9300
- GHSA-6p7m-c3mw-4gmw
- GO-2026-5842

## Timeline

- 2026-04-21: patched: Fix merged in pull request 666
- 2026-04-23: disclosed: Public issue report on GitHub
- 2026-05-23: advisory: NVD publication date
- 2026-05-26: advisory: GitHub Advisory published

## References

- [https://github.com/omec-project/amf/issues/679](https://github.com/omec-project/amf/issues/679)
- [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://vuldb.com/submit/811841](https://vuldb.com/submit/811841)
- [https://vuldb.com/vuln/365247](https://vuldb.com/vuln/365247)

## 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)
- [omec-project amf denial of service in NGAP Message Handler](https://junglewise.ai/threats/cve-2026-14623-omec-project-amf-denial-of-service-in-ngap-message-handler)
- [omec-project amf memory corruption in NGReset Message Handler](https://junglewise.ai/threats/cve-2026-9301-omec-project-amf-memory-corruption-in-ngreset-message-handler)
- [omec-project amf nil pointer dereference in PDUSessionResourceModifyIndication](https://junglewise.ai/threats/cve-2026-9299-omec-project-amf-nil-pointer-dereference-in)
- [omec-project amf memory corruption in PathSwitchRequest Handler](https://junglewise.ai/threats/cve-2026-9298-omec-project-amf-memory-corruption-in-pathswitchrequest-handler)