CVE-2026-82590: Open5GS SMF nudm-handler.c smf_nudm_sdm_handle_get assertion

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-30 · updated 2026-08-31
Weakness: CWE-617

Description

A weakness has been identified in Open5GS up to 2.7.7. The affected element is the function smf_nudm_sdm_handle_get of the file src/smf/nudm-handler.c of the component SMF. Executing a manipulation of the argument preemptCap can lead to reachable assertion. The attack may be launched remotely. Upgrading to version 2.8.0 is sufficient to fix this issue. This patch is called 4554405f29bffd7562abedbee63484825bd90cd5. You should upgrade the affected component.

Affected products

Open5GS: 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5 (+2)

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/commit/4554405f29bffd7562abedbee63484825bd90cd5
https://github.com/open5gs/open5gs/issues/4455
https://github.com/open5gs/open5gs/releases/tag/v2.8.0
https://vuldb.com/cve/CVE-2026-82590
https://vuldb.com/submit/891893
https://vuldb.com/vuln/397085
https://vuldb.com/vuln/397085/cti

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