Open5GS up to 2.7.x Old AMF Discovery Fallback src/amf/nnrf-handler.c amf_nnrf_try_old_amf_discovery_fallback discovery_option use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k2.15-

Summaryinfo

A vulnerability was found in Open5GS up to 2.7.x. It has been rated as critical. Affected by this vulnerability is the function amf_nnrf_try_old_amf_discovery_fallback of the file src/amf/nnrf-handler.c of the component Old AMF Discovery Fallback. This manipulation of the argument discovery_option causes use after free. The identification of this vulnerability is CVE-2026-90707. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability has been found in Open5GS up to 2.7.x and classified as critical. Affected by this vulnerability is the function amf_nnrf_try_old_amf_discovery_fallback of the file src/amf/nnrf-handler.c of the component Old AMF Discovery Fallback. The manipulation of the argument discovery_option with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-90707. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Applying the patch ddd683a35f8aaac2b7b9884a24cd53bddfc65238 is able to eliminate this problem. The bugfix is ready for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.3
VulDB Temp Score: 7.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: ddd683a35f8aaac2b7b9884a24cd53bddfc65238

Timelineinfo

09/13/2026 Advisory disclosed
09/13/2026 +0 days VulDB entry created
09/13/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-90707 (🔒)
GCVE (CVE): GCVE-0-2026-90707
GCVE (VulDB): GCVE-100-403249

Entryinfo

Created: 09/13/2026 10:07
Changes: 09/13/2026 10:07 (56)
Complete: 🔍
Submitter: centauruszzz
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #918267: Open5GS Open5GS AMF <2.8.0 CWE-416: Use After Free (by centauruszzz)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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