CVE-2026-53551mediumCWE-20

CVE-2026-53551: falha de média gravidade em free5gc

free5GC AUSF: null byte injection in supiOrSuci causes HTTP 500 internal service failure

Publicada em · Atualizada em

Seguir esta CVE+ Monitorar free5gc+ Monitorar ausf

Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 6.9epss 0.7%
free5GC is an open-source implementation of the 5G core network. Prior to 1.4.5, the free5GC AUSF (Authentication Server Function) does not validate the supiOrSuci field in UE authentication requests. Null bytes (\x00) and other control characters pass through JSON parsing unchanged and are forwarded to the UDM in an unescaped URL path. This causes Go's net/url.Parse() to fail, returning HTTP 500 "System failure" and leaking internal stack traces. An unauthenticated attacker can trigger this at scale causing denial of service for all subscribers attempting authentication through the affected AUSF. This vulnerability is fixed in 1.4.5.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Produtos afetados
free5gc · ausffree5gc · free5gc
CVEs relacionadas — free5gc

No mesmo produto, das mais perigosas para as menos.

CVE-2026-33063HIGHfree5GC AUSF UE Authentication Panic on Nil SuciSupiMap Interface ConversionEPSS 0.7%CVE-2026-55068CRITICALfree5GC: NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpointsEPSS 0.6%CVE-2026-47780MEDIUMfree5GC: UDR Improper ueId validation in free5GC EE subscription handlers allows arbitrary identifier persistenceEPSS 0.5%CVE-2026-40245HIGHFree5GC: UDR nudr-dr influenceData/subs-to-notify leaks SUPI in error response body without authenticationEPSS 0.5%CVE-2026-33064HIGHfree5GC UDM DataChangeNotification Procedure Panic Due to Nil Pointer DereferenceEPSS 0.5%CVE-2026-40247HIGHfree5gc UDR improper path validation allows unauthenticated access to Traffic Influence SubscriptionsEPSS 0.5%