CVE-2026-90707

medium

Description

A security flaw has been discovered in Open5GS up to 2.7.x. Affected 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 results in use after free. The attack may be performed from remote. The patch is identified as ddd683a35f8aaac2b7b9884a24cd53bddfc65238. Applying a patch is advised to resolve this issue.

References

https://vuldb.com/vuln/403249/cti

https://vuldb.com/vuln/403249

https://vuldb.com/submit/918267

https://vuldb.com/cve/CVE-2026-90707

https://github.com/open5gs/open5gs/pull/4698

https://github.com/open5gs/open5gs/commit/ddd683a35f8aaac2b7b9884a24cd53bddfc65238

https://github.com/open5gs/open5gs/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-77377

Details

Source: Mitre, NVD

Published: 2026-09-14

Updated: 2026-09-15

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 8.3

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

Severity: High

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

Severity: Medium

EPSS

EPSS: 0.00527