PT-2026-21590 · Free5Gc · Free5Gc Smf

Linziyuu · Publicado 2026-02-24 · Atualizado 2026-03-01 · CVE-2026-26024

Positive Technologies (AI Summary)

CVSS v3.1

7.5

Alta

Vetor base

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 up to and including 1.4.1

Description free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation (5G) mobile core networks. The SMF component experiences a panic and terminates when processing a malformed PFCP SessionReportRequest on the PFCP interface (UDP/8805). This issue occurs when receiving a malformed message via the PFCP interface. No upstream fix is currently available. Mitigation strategies include applying Access Control Lists (ACLs) or a firewall to the PFCP interface to restrict access to trusted UPF IPs, dropping or inspecting malformed PFCP SessionReportRequest messages at the network edge, or adding a recover function around the PFCP handler dispatch to prevent complete process termination.

Recommendations free5GC SMF versions up to and including 1.4.1: Apply ACL/firewall rules to the PFCP interface (UDP/8805) to allow only trusted UPF IPs to connect. free5GC SMF versions up to and including 1.4.1: Drop or inspect malformed PFCP SessionReportRequest messages at the network edge. free5GC SMF versions up to and including 1.4.1: Add a recover function around the PFCP handler dispatch to prevent process termination.

Exploit

Correção

DoS

NULL Pointer Dereference

Enumeração de Fraquezas

CWE-476

Identificadores relacionados

CVE-2026-26024

GHSA-MRV4-M9WC-C4G9

Produtos afetados

Free5Gc Smf

Referências · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26024.json · Exploit
• 🔥 https://github.com/free5gc/free5gc/issues/807 · Exploit
• https://github.com/free5gc/free5gc/security/advisories/GHSA-mrv4-m9wc-c4g9 · Aviso do Fabricante
• https://twitter.com/CVEnew/status/2026184663165977078 · Publicação no Twitter
• https://t.me/cveNotify/153188 · Publicação no Telegram
• https://twitter.com/VulmonFeeds/status/2026194811334668759 · Publicação no Twitter
• https://nvd.nist.gov/vuln/detail/CVE-2026-26024 · Nota de Segurança
• https://twitter.com/cracbot/status/2027700441065394354 · Publicação no Twitter
• https://twitter.com/cracbot/status/2027338141456314530 · Publicação no Twitter
• https://twitter.com/cracbot/status/2028062753697746954 · Publicação no Twitter
• https://osv.dev/vulnerability/CVE-2026-26024 · Aviso do Fabricante