CVE-2026-78156

High

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.

SeverityHigh

CVSS7.4

Exploit probability—

ProductOpen5gs

PublishedAug 24, 2026

First seenAug 24, 2026

Weakness typeCWE-122CWE-122 CWE-119Memory buffer bounds error

How to fix

Patches

github.com/open5gs/open5gs/commit/a9c82ee0b590d76a581b0580cb46b598984e2392

Affected products

Product	Affected versions	Fixed in
open5gs open5gs	2.8.0	—

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