CVE-2026-2521 | THREATINT

Description

A weakness has been identified in Open5GS up to 2.7.6. This issue affects the function sgwc_s5c_handle_create_session_response of the component SGW-C. Executing a manipulation can lead to memory corruption. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

PUBLISHED Reserved 2026-02-15 | Published 2026-02-15 | Updated 2026-02-23 | Assigner VulDB

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

MEDIUM: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

5.0AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Memory Corruption

Timeline

2026-02-15:	Advisory disclosed
2026-02-15:	VulDB entry created
2026-02-20:	VulDB entry last update

Credits

LinZiyu (VulDB User) reporter

References

vuldb.com/?id.346109 (VDB-346109 | Open5GS SGW-C sgwc_s5c_handle_create_session_response memory corruption) vdb-entry technical-description

vuldb.com/?ctiid.346109 (VDB-346109 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.738334 (Submit #738334 | Open5GS SGWC v2.7.6 Buffer Overflow) third-party-advisory

github.com/open5gs/open5gs/issues/4282 issue-tracking

github.com/open5gs/open5gs/issues/4282 exploit issue-tracking

github.com/open5gs/open5gs/ product

cve.org (CVE-2026-2521)

nvd.nist.gov (CVE-2026-2521)

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