PT-2026-5403 · Free5Gc · Free5Gc Smf

Ziyulin · Published 2026-01-30 · Updated 2026-02-23 · CVE-2026-1684

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Free5GC SMF versions prior to 4.1.0

Description A flaw exists within the PFCP UDP Endpoint component of Free5GC SMF. Specifically, the HandleReports function within the /internal/context/pfcp reports.go file is susceptible to manipulation, leading to a denial of service. This issue can be exploited remotely.

Recommendations Apply a patch to correct this issue in versions prior to 4.1.0.

Fix

DoS

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2026-1684

Affected Products

Free5Gc Smf

References · 13

• https://github.com/free5gc/free5gc/issues/806 · Vendor Advisory
• https://github.com/free5gc/smf/pull/188 · Patch
• https://osv.dev/vulnerability/CVE-2026-1684 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1684 · Security Note
• https://vuldb.com/?submit.739655 · Note
• https://vuldb.com/?ctiid.343477 · Note
• https://vuldb.com/?submit.739656 · Note
• https://github.com/free5gc/smf · Note
• https://t.me/CVEtracker/43293 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2017262543102722103 · Twitter Post
• https://vuldb.com/?id.343477 · Note
• https://twitter.com/CVEnew/status/2017253393916719166 · Twitter Post
• https://t.me/cveNotify/152831 · Telegram Post