PT-2026-36262 · Open5Gs · Open5Gs

Ziyulin · Published 2026-05-01 · Updated 2026-05-04 · 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 by manipulating the ueContextId argument. This issue occurs 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. As a temporary workaround, restrict access to the '/namf-comm/v1/ue-contexts/{ueContextId}/transfer-update' endpoint to minimize the risk of exploitation.

Exploit

DoS

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2026-7535

Affected Products

Open5Gs

References · 14

• 🔥 https://github.com/open5gs/open5gs/issues/4399 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7535 · Security Note
• https://t.me/CVEtracker/52380 · Telegram Post
• https://twitter.com/CVEarity/status/2050144915422916679 · Twitter Post
• https://twitter.com/SystemTek_UK/status/2050122382317126133 · Twitter Post
• https://vuldb.com/vuln/360352 · Note
• https://twitter.com/VulmonFeeds/status/2050087420024996327 · Twitter Post
• https://twitter.com/infoflowcloud/status/2051337773840208248 · Twitter Post
• https://twitter.com/CVEnew/status/2051336130860384441 · Twitter Post
• https://vuldb.com/submit/804291 · Note
• https://vuldb.com/vuln/360352/cti · Note
• https://t.me/cveNotify/161677 · Telegram Post
• https://github.com/open5gs/open5gs · Note
• https://vuldb.com/submit/804303 · Note