CVE-2026-8728

Name: CVE-2026-8728
Creator: NVD / NIST
Published: 2026-05-17T04:16:58.71+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.1/10EPSS 0.39%

Last modified Jun 17, 2026

CVE-2026-8728 is a low-severity vulnerability rated 2.1/10 on the CVSS scale. A security vulnerability has been detected in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_discovery_option_parse_plmn_list in the library /lib/sbi/conv.c of the component NRF. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

A security vulnerability has been detected in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_discovery_option_parse_plmn_list in the library /lib/sbi/conv.c of the component NRF. Such manipulation of the argument target-plmn-list leads to denial of service. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Metrics

CVSS 3.1

6.5/10

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

CVSS 4.0

2.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.39%

30.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-404

Affected Software

Vendor	Product	Versions
Open5gs	Open5gs	<= 2.7.7

References

https://github.com/open5gs/open5gs/Product
https://github.com/open5gs/open5gs/issues/4458Exploit, Issue Tracking
https://vuldb.com/submit/808510Third Party Advisory, VDB Entry
https://vuldb.com/submit/808511Third Party Advisory, VDB Entry
https://vuldb.com/vuln/364317Third Party Advisory, VDB Entry
https://vuldb.com/vuln/364317/ctiPermissions Required, VDB Entry

Timeline

Published: May 17, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-8728?

How severe is CVE-2026-8728?

CVE-2026-8728 has a CVSS score of 2.1/10 (LOW severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2026-8728?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-8728?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST