CVE-2023-6269: Argument injection vulnerability in Atos Unify OpenScape Session Border Controller, Atos Unify OpenScape Branch and Atos Unify OpenScape BCF

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-12-05 · updated 2026-06-17
Weakness: CWE-88

Description

An argument injection vulnerability has been identified in the administrative web interface of the Atos Unify OpenScape products "Session Border Controller" (SBC) and "Branch", before version V10 R3.4.0, and OpenScape "BCF" before versions V10R10.12.00 and V10R11.05.02. This allows an unauthenticated attacker to gain root access to the appliance via SSH (scope change) and also bypass authentication for the administrative interface and gain access as an arbitrary (administrative) user.

Affected products

Atos Unify Openscape Bcf: from 10 before 10r10.12.00 — fixed in 10r10.12.00
Atos Unify Openscape Branch: from 10 before 10r3.4.0 — fixed in 10r3.4.0
Atos Unify Openscape Session Border Controller: from 10 before 10r3.4.0 — fixed in 10r3.4.0

How to fix

Upgrade to a fixed version: Atos Unify Openscape Bcf 10r10.12.00; Atos Unify Openscape Branch 10r3.4.0; Atos Unify Openscape Session Border Controller 10r3.4.0. Check the vendor advisory for mitigations.

References

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