PT-2026-30605 · Free5Gc · Free5Gc

Shovon0203 · CVE-2026-5661 · Published 2026-04-06 · Updated 2026-04-06

Positive Technologies (AI Summary)

CVSS v4.0

5.5

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Name of the Vulnerable Software and Affected Versions Free5GC version 4.2.0

Description A flaw exists in Free5GC 4.2.0 within the NGSetupRequest Handler component, potentially leading to a denial of service. The attack can be initiated remotely. The exploit is publicly available.

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-2026-5661

Affected Products

Free5Gc

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5661.json · Exploit
• 🔥❌ https://github.com/user-attachments/files/25581199/amfcfg.yaml · Exploit, Deleted
• https://github.com/free5gc/amf/pull/201 · Patch
• https://osv.dev/vulnerability/CVE-2026-5661 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5661 · Security Note
• https://github.com/free5gc/free5gc/issues/832 · Note
• https://vuldb.com/submit/785896 · Note
• https://github.com/free5gc/free5gc · Note
• https://twitter.com/CVEnew/status/2041171325876592999 · Twitter Post
• https://twitter.com/infoflowcloud/status/2041173152303120478 · Twitter Post
• https://vuldb.com/vuln/355485 · Note
• https://vuldb.com/vuln/355485/cti · Note