# CVE-2026-33063: GO-2026-4754 - free5GC AUSF UE Authentication Panic on Nil SuciSupiMap Interface Conversion in github.com/free5gc/ausf

Source: https://junglewise.ai/threats/cve-2026-33063-free5gc-ausf-ue-authentication-panic-on-nil-sucisupimap-interface  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-23  
License: CC BY 4.0 with a link back

CVE-2026-33063 · Severity: medium · CVSS 4 · Published 2026-03-23

free5GC AUSF UE Authentication Panic on Nil SuciSupiMap Interface Conversion in github.com/free5gc/ausf

Technologies: [github.com/free5gc/ausf (Go)](https://junglewise.ai/threats/technologies/github-com-free5gc-ausf). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2026-33063 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-33063 being exploited in the wild.

**How severe is CVE-2026-33063?** Medium severity, with a CVSS score of 4, published 23 March 2026.

**Which products and versions are affected?** github.com/free5gc/ausf (Go) SEMVER:introduced=0,fixed=1.4.2.

**Is there a fix for CVE-2026-33063?** Yes. github.com/free5gc/ausf (Go): upgrade to 1.4.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-33063?** Check whether you run github.com/free5gc/ausf (Go) 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/free5gc/ausf (Go): upgrade to 1.4.2 or later

  ```sh
  go get github.com/free5gc/ausf@v1.4.2
  ```


## Affected products

- github.com/free5gc/ausf (Go) SEMVER:introduced=0,fixed=1.4.2

## Identifiers

- CVE-2026-33063
- GHSA-4jrw-92fg-4jwx
- GO-2026-4754

## Related threats

- [free5GC AUSF non-constant-time authentication comparison and sensitive logging](https://junglewise.ai/threats/cve-2026-55785-free5gc-ausf-non-constant-time-authentication-comparison-and)
- [free5GC AUSF authentication context race condition](https://junglewise.ai/threats/cve-2026-55784-free5gc-ausf-authentication-context-race-condition)
- [free5gc AUSF improper input validation in supiOrSuci field](https://junglewise.ai/threats/cve-2026-53551-free5gc-ausf-improper-input-validation-in-supiorsuci-field)