EUVD-2026-72103
GHSA-hmq7-pg9j-qvf9
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible NGAP/S1AP interface; PR:L because attacker must be a registered gNB/eNB; availability-only impact, no C or I.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
6DescriptionCVE.org
A vulnerability has been found in Open5GS 2.7.7/2.8.0. This vulnerability affects unknown code of the component AMF/MME. The manipulation leads to improper authorization. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The identifier of the patch is 9468de94caed2fc940f4a23cbf734651896d0fde. To fix this issue, it is recommended to deploy a patch.
AnalysisAI
Improper authorization in Open5GS 2.7.7 and 2.8.0 AMF (5G) and MME (4G) components allows an authenticated, network-registered gNB or eNB to send crafted NG-Reset or S1-Reset messages listing NGAP/S1AP UE IDs that belong to sessions managed by a different base station. The AMF/MME processes these resets without verifying ownership, enabling session termination for subscribers served by other base stations. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an active SCTP-based N2 interface connection (for 5G/AMF) or S1 interface connection (for 4G/MME) from a network-registered gNB or eNB to the target Open5GS core. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 (AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L) correctly captures the bounded nature of this flaw: impact is limited to availability (VA:L), with no confidentiality or integrity compromise, and exploitation requires low-privilege access as a registered gNB or eNB on the target network. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply upstream patch commit 9468de94caed2fc940f4a23cbf734651896d0fde from the Open5GS GitHub repository (https://github.com/open5gs/open5gs/commit/9468de94caed2fc940f4a23cbf734651896d0fde). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Reachable assertion in Open5GS up to version 2.7.6 allows remote unauthenticated attackers to crash the Diameter CER han
Denial of service in Open5GS 2.7.6 and earlier allows network-adjacent attackers with low-privilege Diameter Gx peer acc
Denial of service in Open5GS HSS (Home Subscriber Server) versions 2.7.0 through 2.7.6 is triggered remotely by manipula
open5gs v2.6.4 is vulnerable to Buffer Overflow. Rated critical severity (CVSS 9.8), this vulnerability is remotely expl
Open5GS v2.6.4 is vulnerable to Buffer Overflow. Rated critical severity (CVSS 9.8), this vulnerability is remotely expl
A request-validation issue was discovered in Open5GS 2.1.3 through 2.2.x before 2.2.1. Rated critical severity (CVSS 9.8
Memory corruption in Open5GS versions through 2.7.1 is remotely exploitable via the freeDiameter protocol component, all
Open5GS 2.1.3 listens on 0.0.0.0:3000 and has a default password of 1423 for the admin account. Rated high severity (CVS
Open5GS MME versions <= 2.6.4 contain a reachable assertion in the `Uplink NAS Transport` packet handler. Rated high sev
Open5GS MME version <= 2.6.4 contains an assertion that can be remotely triggered via a malformed ASN.1 packet over the
Open5GS MME versions <= 2.6.4 contain an assertion that can be remotely triggered via a malformed ASN.1 packet over the
Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a malformed ASN.1 packet over the
Same weakness CWE-285 – Improper Authorization
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External POC / Exploit Code
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