CVE-2026-8224: Open5GS PCF context.c pcf_sess_set_ipv6prefix denial of service

Severity: high (CVSS 7.5 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: yes
Published: 2026-05-10 · updated 2026-07-24
Weakness: CWE-404

Description

A vulnerability was determined in Open5GS up to 2.7.7. Affected by this issue is the function pcf_sess_set_ipv6prefix of the file /src/pcf/context.c of the component PCF. Executing a manipulation of the argument SmPolicyContextData.ipv6AddressPrefix can lead to denial of service. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Open5GS: through 2.7.7

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4439
https://vuldb.com/submit/808443
https://vuldb.com/vuln/362441
https://vuldb.com/vuln/362441/cti

Get alerted when CVE-2026-8224 or the next vulnerability affects your stack