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CVE-2026-78156— Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow

Quick assessment

Affected
n/a Open5GS
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Open5GS 2.8.0 中发现了一个安全漏洞。该漏洞影响的是组件 S6a Authentication-Information-Request Handler 中的文件 src/hss/hss-s6a-path.c 中的函数 hss_ogs_diam_s6a_air_cb。此类对参数 Visited-PLMN-Id 的操作会导致基于堆的缓冲区溢出。该攻击可能从远程执行。修复此问题的补丁名称为 a9c82ee0b590d76a581b0580cb46b598984e2392。应应用此补丁以修复该漏洞。

CVSS 7.4 · High EPSS 0.33% · P26

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a Open5GS 2.8.0 affected
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I. Basic Information for CVE-2026-78156

Vulnerability Information
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Vulnerability Title
Open5GS S6a Authentication-Information-Request hss-s6a-path.c hss_ogs_diam_s6a_air_cb heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in Open5GS 2.8.0. Affected by this issue is the function hss_ogs_diam_s6a_air_cb of the file src/hss/hss-s6a-path.c of the component S6a Authentication-Information-Request Handler. Such manipulation of the argument Visited-PLMN-Id leads to heap-based buffer overflow. The attack may be performed from remote. The name of the patch is a9c82ee0b590d76a581b0580cb46b598984e2392. A patch should be applied to remediate this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Open5GS 2.8.0 cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-78156

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 12214 chars
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III. Intelligence Information for CVE-2026-78156

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Patches & Fixes for CVE-2026-78156 (1)

Vendor Advisories for CVE-2026-78156 (1)

Proof of Concept for CVE-2026-78156 (1)

News Coverage for CVE-2026-78156 (1)

Other References for CVE-2026-78156 (1)

IV. Related Vulnerabilities

Same product: Open5GS
Same vendor: n/a
Same weakness: CWE-122

V. Comments for CVE-2026-78156

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