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CVE-2026-82590— Open5GS SMF nudm-handler.c smf_nudm_sdm_handle_get assertion

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（版本 2.7.7 及以下）中发现了一个安全弱点。受影响的组件为 SMF，具体位于 文件中的 函数。通过对参数 进行特定操作，可能触发可达的断言（reachable assertion），从而导致程序异常终止。该攻击可远程发起。升级至 2.8.0 版本即可修复此问题。该修复对应的补丁提交哈希为 。建议及时升级受影响的组件以消除该漏洞。

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-82590

Vulnerability Information
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Vulnerability Title
Open5GS SMF nudm-handler.c smf_nudm_sdm_handle_get assertion
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in Open5GS up to 2.7.7. The affected element is the function smf_nudm_sdm_handle_get of the file src/smf/nudm-handler.c of the component SMF. Executing a manipulation of the argument preemptCap can lead to reachable assertion. The attack may be launched remotely. Upgrading to version 2.8.0 is sufficient to fix this issue. This patch is called 4554405f29bffd7562abedbee63484825bd90cd5. You should 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
可达断言
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-2026-82590

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III. Intelligence Information for CVE-2026-82590

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Patches & Fixes for CVE-2026-82590 (2)

Security Blog Posts for CVE-2026-82590 (1)

Vendor Pages for CVE-2026-82590 (1)

Other References for CVE-2026-82590 (2)

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-2026-82589 4.3 MEDIUM Open5GS N1-N2 Message namf-handler.c amf_namf_comm_handle_n1_n2_message_transfer denial of
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-617

V. Comments for CVE-2026-82590

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