# CVE-2026-9301: omec-project amf memory corruption in NGReset Message Handler

Source: https://junglewise.ai/threats/cve-2026-9301-omec-project-amf-memory-corruption-in-ngreset-message-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-2026-9301 · 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 remote crash. By sending specially crafted network messages, an attacker can trigger a system failure (panic), leading to a denial of service for mobile subscribers. This could disrupt connectivity and network operations until the service is restarted.

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-2026-9301 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9301 being exploited in the wild.

**How severe is CVE-2026-9301?** 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-2026-9301?** 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-2026-9301 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-9301?** 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 vulnerability in the NGReset Message Handler of omec-project amf (up to version 2.1.1) allows for memory corruption and service crashes. The root cause is a nil pointer dereference in the `printAndGetCause` and `HandleNGReset` functions within `ngap/handler.go` when processing malformed NGAP packets. A remote attacker with network access can trigger a Go runtime panic by sending a crafted NGReset message with missing or invalid Information Elements (IEs). This issue was addressed in version 1.7.1-0.20260421213846-34bc6724acc9 (and later 2.2.0) by implementing proper nil checks and input validation across the NGAP dispatcher and handlers.

## Affected products

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

## Identifiers

- CVE-2026-9301
- GHSA-qm7q-rcm2-3frc
- GO-2026-5844

## Timeline

- 2026-04-21: patched: Fix merged in pull request 666
- 2026-04-23: disclosed: Issue 678 reported with reproduction steps
- 2026-05-23: advisory: NVD publication date
- 2026-05-26: advisory: GitHub Advisory published

## References

- [https://github.com/omec-project/amf/issues/678](https://github.com/omec-project/amf/issues/678)
- [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/811842](https://vuldb.com/submit/811842)
- [https://vuldb.com/vuln/365248](https://vuldb.com/vuln/365248)

## 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 NGSetupRequest Handler](https://junglewise.ai/threats/cve-2026-9300-omec-project-amf-memory-corruption-in-ngsetuprequest-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)