CVE-2026-4988 — LOW (3.7) — White Hats Nepal

Vulnerability Description

A security flaw has been discovered in Open5GS 2.7.6. This issue affects the function smf_gx_cca_cb/smf_gy_cca_cb/smf_s6b of the component CCA Message Handler. The manipulation results in denial of service. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The exploit has been released to the public and may be used for attacks.

CVSS Score

3.7

LOW

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Open5Gs	Open5Gs	2.7.6

Related Weaknesses (CWE)

CWE-404

References

https://github.com/open5gs/open5gs/Product
https://github.com/open5gs/open5gs/issues/4342ExploitIssue Tracking
https://github.com/open5gs/open5gs/issues/4342#issue-4021772232Issue Tracking
https://vuldb.com/?ctiid.353875Permissions RequiredVDB Entry
https://vuldb.com/?id.353875Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.771349ExploitThird Party AdvisoryVDB Entry

FAQ

What is CVE-2026-4988?

CVE-2026-4988 is a vulnerability with a CVSS score of 3.7 (LOW). A security flaw has been discovered in Open5GS 2.7.6. This issue affects the function smf_gx_cca_cb/smf_gy_cca_cb/smf_s6b of the component CCA Message Handler. The manipulation results in denial of se...

How severe is CVE-2026-4988?

CVE-2026-4988 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4988?

Check the references section above for vendor advisories and patch information. Affected products include: Open5Gs Open5Gs.