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open5gs

A flaw has been found in Open5GS up to 2.7.5. Impacted is the function ogs_gtp2_f_teid_to_ip of the file /sgwc/s11-handler.c of the component SGWC. Executing a manipulation can lead to denial of service. The attack may be performed from remote. The exploit has been published and may be used. It is advisable to implement a patch to correct this issue. The issue report is flagged as already-fixed.

CVE-2026-1586 identifies a denial of service (DoS) vulnerability in Open5GS, an open-source 5G core network implementation widely used for mobile network infrastructure. The vulnerability resides in the ogs_gtp2_f_teid_to_ip function within the SGWC (Serving Gateway Control) component, specifically in the s11-handler.c source file. This function is responsible for translating GTP (GPRS Tunneling Protocol) Tunnel Endpoint Identifiers (TEIDs) to IP addresses during signaling message processing. Improper handling or validation of manipulated input data can cause the function to malfunction, leading to a crash or hang of the SGWC process. The attack vector is remote and does not require any authentication or user interaction, making exploitation relatively straightforward for an attacker with network access to the affected component. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the network attack vector, low complexity, and lack of required privileges, but limited to availability impact only. The vulnerability affects Open5GS versions 2.7.0 through 2.7.5 and has been addressed in subsequent releases. While no active exploitation has been reported, a proof-of-concept exploit is publicly available, increasing the risk of future attacks. Open5GS is commonly deployed by telecom operators and enterprises implementing private 5G networks, making this vulnerability relevant to critical telecommunications infrastructure.

Detailed information about CVE-2026-1586: Denial of Service in Open5GS affecting null Open5GS. Get real-time updates, technical details, and mitigation strategi

CVE-2026-1586: Denial of Service in Open5GS - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-1586: Denial of Service in Open5GS

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