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CVE-2026-82589— Open5GS N1-N2 Message namf-handler.c amf_namf_comm_handle_n1_n2_message_transfer denial of service

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.

在 Open5GS 2.7.7 及更早版本中发现了一个安全漏洞。受影响的是文件中 N1-N2 消息处理器组件里的函数。通过对参数进行操纵，可引发服务拒绝（DoS）问题。该攻击可远程发起。利用该漏洞的工具/方法已公开，可用于实施攻击。建议升级至 2.8.0 版本以修复此问题。补丁编号为 abf8a836564b966b5141110fc25ed413c4f17522。建议升级受影响的组件。

CVSS 4.3 · Medium Updated Aug 31, 2026

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

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Vulnerability Information

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Vulnerability Title

Open5GS N1-N2 Message namf-handler.c amf_namf_comm_handle_n1_n2_message_transfer denial of service

Source: CVE Program / CVE List V5

Vulnerability Description

A security flaw has been discovered in Open5GS up to 2.7.7. Impacted is the function amf_namf_comm_handle_n1_n2_message_transfer of the file src/amf/namf-handler.c of the component N1-N2 Message Handler. Performing a manipulation of the argument N1N2MessageTransferReqData.n2InfoContainer.smInfo.n2InfoContent.ngapIeType results in denial of service. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.8.0 is recommended to address this issue. The patch is named abf8a836564b966b5141110fc25ed413c4f17522. It is advisable to upgrade the affected component.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

不恰当的资源关闭或释放

Source: CVE Program / CVE List V5

Affected Products

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

II. Public POCs for CVE-2026-82589

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-82589

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Same Patch Batch · n/a · 2026-08-30 · 5 CVEs total

CVE-2026-82556	6.3 MEDIUM	Forgejo Repository Migration is_migrate_allowed.go net.LookupIP server-side request forger
CVE-2026-82590	4.3 MEDIUM	Open5GS SMF nudm-handler.c smf_nudm_sdm_handle_get assertion
CVE-2026-82588	4.3 MEDIUM	Open5GS Transfer Endpoint namf-handler.c null pointer dereference
CVE-2026-82587	4.3 MEDIUM	Open5GS AMF namf-handler.c amf_namf_comm_decode_ue_mm_context_list memory corruption

IV. Related Vulnerabilities

Same product: Open5GS

Same vendor: n/a

Same weakness: CWE-404

V. Comments for CVE-2026-82589

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-82589— Open5GS N1-N2 Message namf-handler.c amf_namf_comm_handle_n1_n2_message_transfer denial of service

Quick assessment

Possible ATT&CK Techniques 1 AI

I. Basic Information for CVE-2026-82589

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-82589

III. Intelligence Information for CVE-2026-82589

Patches & Fixes for CVE-2026-82589 (1)

Proof of Concept for CVE-2026-82589 (1)

News Coverage for CVE-2026-82589 (1)

Vendor Pages for CVE-2026-82589 (1)

Other References for CVE-2026-82589 (2)

Same Patch Batch · n/a · 2026-08-30 · 5 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-82589

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