CVE-2025-29632

Author: HanyiLuo, Yuqi Huo CVE-2025-29632 the information for the vulnerability covered by CVE-2025-29632 Affected versions: 4.0.0 and previous versions When free5gc processes the InitialUEMessage, it only checks whether the nASPDU reference is nil i.e., whether it is a null pointer, but does not...

Free5gc 3.2.1 - Information Disclosure

Free5gc 3.2.1 is susceptible to information disclosure. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized operations. id: CVE-2022-38870 info: name: Free5gc 3.2.1 - Information Disclosure author: For3stCo1d severity: high description: | Free5gc 3.2.1 ...

CVE-2026-55784

creationtimestamp| type| source ---|---|--- 2026-08-29 00:00:57+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mu6l3ppgae27 2026-08-29 00:33:59+00:00| seen| https://bsky.app/profile/termsofsurrender.bsky.social/post/3mu6mwsa5mu2l 2026-08-29 00:35:08+00:00|...

CVE-2026-55785

free5GC is an open-source implementation of the 5G core network. Prior to 1.4.5, the AUSF component performs cryptographic authentication comparisons in internal/sbi/processor/ueauthentication.go with ordinary equality helpers. Auth5gAkaComfirmRequestProcedure compares RES and XRES with...

CVE-2026-55784

free5GC is an open-source implementation of the 5G core network. In version 1.4.4 and earlier, the AUSF component stores per-subscriber authentication state in a global sync.Map named AUSFContext.UePool in internal/context/context.go, keyed only by SUPI. Every request handled by...

free5GC AUSF uses non-constant-time authentication comparisons and logs XRES* in 5G-AKA

Summary The AUSF component of free5GC compares authentication response values with normal Go equality helpers instead of constant-time cryptographic comparison functions. Two authentication flows are affected in internal/sbi/processor/ueauthentication.go: 1. 5G-AKA confirmation compares RES and...

CVE-2026-55785

free5GC's AUSF component (prior to version 1.4.5) performs 5G-AKA cryptographic authentication comparisons in ue_authentication.go using non-constant-time helpers: strings.EqualFold for RES*/XRES* and bytes.Equal for AT_MAC/XMAC. Additionally, the expected XRES* value is logged at INFO level befo...

CVE-2026-55785 free5GC AUSF uses non-constant-time authentication comparisons and logs XRES* in 5G-AKA

free5GC is an open-source implementation of the 5G core network. Prior to 1.4.5, the AUSF component performs cryptographic authentication comparisons in internal/sbi/processor/ueauthentication.go with ordinary equality helpers. Auth5gAkaComfirmRequestProcedure compares RES and XRES with...

CVE-2026-55785 free5GC AUSF uses non-constant-time authentication comparisons and logs XRES* in 5G-AKA

free5GC is an open-source implementation of the 5G core network. Prior to 1.4.5, the AUSF component performs cryptographic authentication comparisons in internal/sbi/processor/ueauthentication.go with ordinary equality helpers. Auth5gAkaComfirmRequestProcedure compares RES and XRES with...

EUVD-2026-68017

free5GC is an open-source implementation of the 5G core network. Prior to 1.4.5, the AUSF component performs cryptographic authentication comparisons in internal/sbi/processor/ueauthentication.go with ordinary equality helpers. Auth5gAkaComfirmRequestProcedure compares RES and XRES with...

free5GC AUSF authentication contexts can be overwritten by concurrent requests for the same SUPI

Summary The AUSF component of free5GC stores per-subscriber authentication state in a global sync.Map keyed only by SUPI. Every incoming authentication request creates a new AusfUeContext and stores it under that SUPI key without checking whether an authentication procedure is already in progress...

CVE-2026-55784 free5GC AUSF authentication contexts can be overwritten by concurrent requests for the same SUPI

free5GC is an open-source implementation of the 5G core network. In version 1.4.4 and earlier, the AUSF component stores per-subscriber authentication state in a global sync.Map named AUSFContext.UePool in internal/context/context.go, keyed only by SUPI. Every request handled by...

CVE-2026-55784

free5GC is an open-source 5G core network implementation. In versions 1.4.4 and earlier , the AUSF component stores per-subscriber authentication state in a global sync.Map keyed only by SUPI . Because each request unconditionally replaces the active context for that SUPI, an attacker with access...

EUVD-2026-68016

free5GC is an open-source implementation of the 5G core network. In version 1.4.4 and earlier, the AUSF component stores per-subscriber authentication state in a global sync.Map named AUSFContext.UePool in internal/context/context.go, keyed only by SUPI. Every request handled by...

CVE-2026-55068

free5GC is an open-source implementation of the 5G core network. In 4.2.2 and earlier, the NRF RegisterNFInstance handler at PUT /nnrf-nfm/v1/nf-instances/nfInstanceID accepts NF Profiles without enforcing UUID format, nfStatus enum values, heartBeatTimer ranges, mandatory profile fields, or...

CVE-2026-55068

creationtimestamp| type| source ---|---|--- 2026-08-28 17:33:07+00:00| seen| https://gist.github.com/alon710/6afc3d410daf4fc14ca37ccd754d5535 2026-08-28 18:35:23+00:00| published-proof-of-concept| https://github.com/free5gc/free5gc/security/advisories/GHSA-x8mj-6p3q-g5pp 2026-08-28 22:07:40+00:00...

GHSA-X8MJ-6P3Q-G5PP free5GC NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints

Summary free5GC NRF Docker image free5gc-fuzz:latest accepts NF registration requests without validating any field constraints against 3GPP TS 29.510, allowing unauthenticated attackers to inject fake NF profiles with arbitrary service endpoint IP addresses. All 17 constraint violations tested UU...

free5GC NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints

Summary free5GC NRF Docker image free5gc-fuzz:latest accepts NF registration requests without validating any field constraints against 3GPP TS 29.510, allowing unauthenticated attackers to inject fake NF profiles with arbitrary service endpoint IP addresses. All 17 constraint violations tested UU...

CVE-2026-55068 free5GC: NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints

free5GC is an open-source implementation of the 5G core network. In 4.2.2 and earlier, the NRF RegisterNFInstance handler at PUT /nnrf-nfm/v1/nf-instances/nfInstanceID accepts NF Profiles without enforcing UUID format, nfStatus enum values, heartBeatTimer ranges, mandatory profile fields, or...

CVE-2026-55068

free5GC (open-source 5G core network) version 4.2.2 and earlier is vulnerable to NF Registration Poisoning in the NRF component. The RegisterNFInstance handler (PUT /nnrf-nfm/v1/nf-instances/{nfInstanceID}) accepts NF profile bodies without enforcing 3GPP TS 29.510 constraints for UUID format, nf...