PT-2026-36262 · Open5Gs · Open5Gs

Ziyulin · Published 2026-05-01 · Updated 2026-05-01 · CVE-2026-7535

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 denial of service can be triggered through the manipulation of the ueContextId variable. This issue exists within the amf namf comm handle registration status update request() function located in the /lib/app/ogs-init.c library, specifically affecting the '/namf-comm/v1/ue-contexts/{ueContextId}/transfer-update' endpoint.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2026-7535

Affected Products

Open5Gs

References · 8

• 🔥 https://github.com/open5gs/open5gs/issues/4399 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7535 · Security Note
• https://vuldb.com/vuln/360352/cti · Note
• https://github.com/open5gs/open5gs · Note
• https://vuldb.com/vuln/360352 · Note
• https://vuldb.com/submit/804303 · Note
• https://vuldb.com/submit/804291 · Note
• https://twitter.com/VulmonFeeds/status/2050087420024996327 · Twitter Post