---
title: "CVE-2026-90707: Open5GS - Use After Free"
description: "Open5GS <= 2.7.x contains a use after free vulnerability caused by manipulation of the discovery_option argument in amf_nnrf_try_old_amf_discovery_fallback function, letting remote attackers cause memory corruption, exploit requires crafted input."
url: https://panop.io/threat-heartbeat/CVE-2026-90707/
---

# CVE-2026-90707 Open5GS - Use After Free

Open5GS <= 2.7.x contains a use after free vulnerability caused by manipulation of the discovery\_option argument in amf\_nnrf\_try\_old\_amf\_discovery\_fallback function, letting remote attackers cause memory corruption, exploit requires crafted input.

CVSS base score 8.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.53% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90707)

## Details

Type

Use After Free

Impact

Denial Of Service, Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Published

14 September 2026

Updated

15 October 2026

Weakness

[CWE-119](https://cwe.mitre.org/data/definitions/119.html)

## Vendor fix

Apply patch ddd683a35f8aaac2b7b9884a24cd53bddfc65238 or update to a version after 2.7.x.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-90707](https://nvd.nist.gov/vuln/detail/CVE-2026-90707)
- [https://github.com/open5gs/open5gs/commit/ddd683a35f8aaac2b7b9884a24cd53bddfc65238](https://github.com/open5gs/open5gs/commit/ddd683a35f8aaac2b7b9884a24cd53bddfc65238)
- [https://github.com/open5gs/open5gs/pull/4698](https://github.com/open5gs/open5gs/pull/4698)
- [https://vuldb.com/cve/CVE-2026-90707](https://vuldb.com/cve/CVE-2026-90707)
- [https://vuldb.com/submit/918267](https://vuldb.com/submit/918267)
- [https://vuldb.com/vuln/403249](https://vuldb.com/vuln/403249)
- [https://vuldb.com/vuln/403249/cti](https://vuldb.com/vuln/403249/cti)
- [https://github.com/open5gs/open5gs/](https://github.com/open5gs/open5gs/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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