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Description

A flaw has been found in Open5GS up to 2.7.7. This issue affects the function bsf_sess_find_by_ipv6prefix of the file /src/bsf/context.c of the component BSF. This manipulation of the argument ipv6Prefix causes denial of service. It is possible to initiate the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-01 | Updated 2026-05-01 | Assigner VulDB




MEDIUM: 5.3CVSS: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
MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
MEDIUM: 4.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
4.0AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Denial of Service

Timeline

2026-05-01:Advisory disclosed
2026-05-01:VulDB entry created
2026-05-01:VulDB entry last update

Credits

ZiyuLin (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/360530 (VDB-360530 | Open5GS BSF context.c bsf_sess_find_by_ipv6prefix denial of service) vdb-entry technical-description

vuldb.com/vuln/360530/cti (VDB-360530 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/804322 (Submit #804322 | Open5gs BSF v2.7.7 Denial of Service) third-party-advisory

github.com/open5gs/open5gs/issues/4401 exploit issue-tracking

github.com/open5gs/open5gs/ product

cve.org (CVE-2026-7583)

nvd.nist.gov (CVE-2026-7583)

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