PT-2026-6666 · Free5Gc · Free5Gc

Ziyulin · Published 2026-02-06 · Updated 2026-02-09 · CVE-2026-1974

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 versions prior to 4.1.1

Description A flaw exists in Free5GC’s SMF component, specifically within the ResolveNodeIdToIp function located in the internal/sbi/processor/datapath.go file. This issue can lead to a denial of service. Remote exploitation is possible. The exploit is publicly available.

Recommendations Apply a patch to address this issue in Free5GC versions prior to 4.1.1.

Exploit

Fix

DoS

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2026-1974

Affected Products

Free5Gc

References · 14

• 🔥 https://github.com/free5gc/free5gc/issues/816#issue-3832055233 · Exploit
• 🔥 https://vuldb.com/?submit.743237 · Exploit
• https://github.com/free5gc/free5gc/issues/816 · Vendor Advisory
• https://github.com/free5gc/smf/pull/189 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-1974 · Security Note
• https://osv.dev/vulnerability/CVE-2026-1974 · Vendor Advisory
• https://t.me/cveNotify/151079 · Telegram Post
• https://twitter.com/CVEnew/status/2019618723313889474 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2019679850764656953 · Twitter Post
• https://github.com/free5gc/free5gc · Note
• https://t.me/CVEtracker/43883 · Telegram Post
• https://vuldb.com/?ctiid.344496 · Note
• https://t.me/cveNotify/151422 · Telegram Post
• https://vuldb.com/?id.344496 · Note