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CVE-2026-10565— Open5GS NGAP Handover gmm-sm.c gmm_state_security_mode race condition

Quick assessment

Affected
n/a Open5GS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Open5GS是Open5GS开源的一个 5G Core 和 Epc 的 C 语言开源实现，即 Lte/Nr 网络的核心网络。 Open5GS 2.7.6及之前版本存在竞争条件问题漏洞，该漏洞源于NGAP Handover组件中文件src/amf/gmm-sm.c的gmm_state_security_mode函数问题，可能导致竞争条件。

CVSS 3.1 · Low EPSS 0.22% · P12

Affected Version Matrix 7

VendorProduct Version RangeStatus
n/a Open5GS 2.7.0 affected
2.7.1 affected
2.7.2 affected
2.7.3 affected
2.7.4 affected
2.7.5 affected
2.7.6 affected
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I. Basic Information for CVE-2026-10565

Vulnerability Information
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Vulnerability Title
Open5GS NGAP Handover gmm-sm.c gmm_state_security_mode race condition
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Open5GS up to 2.7.6. The impacted element is the function gmm_state_security_mode of the file src/amf/gmm-sm.c of the component NGAP Handover. Performing a manipulation results in race condition. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitability is regarded as difficult. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Open5GS 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open5GS是Open5GS开源的一个 5G Core 和 Epc 的 C 语言开源实现，即 Lte/Nr 网络的核心网络。 Open5GS 2.7.6及之前版本存在竞争条件问题漏洞，该漏洞源于NGAP Handover组件中文件src/amf/gmm-sm.c的gmm_state_security_mode函数问题，可能导致竞争条件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Open5GS 2.7.0 cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-10565

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III. Intelligence Information for CVE-2026-10565

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Patches & Fixes for CVE-2026-10565 (1)

Proof of Concept for CVE-2026-10565 (1)

Other References for CVE-2026-10565 (1)

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IV. Related Vulnerabilities

Same product: Open5GS
Same vendor: n/a
Same weakness: CWE-362

V. Comments for CVE-2026-10565

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