PT-2026-36928 · Open5Gs · Open5Gs

Frankylin · Published 2026-05-04 · Updated 2026-05-04 · CVE-2026-7780

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Open5GS versions prior to 2.7.8

Description A remote flaw exists in the udm state operational() function within the /src/udm/udm-sm.c file of the 'smf-registrations' endpoint. Manipulation of this component can lead to a denial of service.

Recommendations As a temporary workaround, restrict access to the 'smf-registrations' endpoint or the udm state operational() function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2026-7780

Affected Products

Open5Gs

References · 8

• 🔥 https://github.com/open5gs/open5gs/issues/4419 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7780 · Security Note
• https://vuldb.com/vuln/360977/cti · Note
• https://vuldb.com/vuln/360977 · Note
• https://twitter.com/infoflowcloud/status/2051437025765519405 · Twitter Post
• https://vuldb.com/submit/806250 · Note
• https://twitter.com/CVEnew/status/2051435662977683751 · Twitter Post
• https://github.com/open5gs/open5gs · Note