Skip to content
Noroxi
NVD / CVE Program· CNA SEC-VLab

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

CriticalCVSS 9.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Plan (action score 40/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.8% (FIRST EPSS); higher than 79.5% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Atos Unify OpenScape BCF V10 R10.12.00, V10R 11.05.02; Atos Unify OpenScape Branch V10 R3.4.0; Atos Unify OpenScape Session Border Controller (SBC) V10 R3.4.0.

Add it to your regular patch cycle. Upgrade to Atos Unify OpenScape BCF V10 R10.12.00, V10R 11.05.02; Atos Unify OpenScape Branch V10 R3.4.0; Atos Unify OpenScape Session Border Controller (SBC) V10 R3.4.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Dec 5, 2023
Updated
Jun 17, 2026
EPSS
1.8% · 79th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.8%

CNA vs NVD score

NVD
9.8
CNA · SEC-VLab
10.0
0.2 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-6269

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for atos records
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
atosunify openscape bcf
atosunify openscape branch
atosunify openscape session border controller

Versions reported by the vendor

Affected version ranges reported by the assigning authority (SEC-VLab). Independent of NVD's CPE analysis and usually ahead of it.

  • Atos Unify OpenScape BCF

    • before V10 R10.12.00affected · semver
    • before V10R 11.05.02affected · semver

  • Atos Unify OpenScape Branch

    • before V10 R3.4.0affected · semver

  • Atos Unify OpenScape Session Border Controller (SBC)

    • before V10 R3.4.0affected · semver

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • atos unify openscape bcf10 and later · before 10r10.12.00
  • atos unify openscape branch10 and later · before 10r3.4.0
  • atos unify openscape session border controller10 and later · before 10r3.4.0

Same product

atos: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-36444An issue was discovered in Atos Unify OpenScape SBC 9 and 10 before 10R2.2.1, Atos Unify OpenScape Branch 9 and 10 before version 10R2.1.1…
    39Monitor
  • CVE-2023-30638Atos Unify OpenScape SBC 10 before 10R3.1.3, OpenScape Branch 10 before 10R3.1.2, and OpenScape BCF 10 before 10R10.7.0 allow remote…
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Atos Unify OpenScape BCFV10 R10.12.00Vendor (CNA)
Atos Unify OpenScape BCFV10R 11.05.02Vendor (CNA)
Atos Unify OpenScape BranchV10 R3.4.0Vendor (CNA)
Atos Unify OpenScape Session Border Controller (SBC)V10 R3.4.0Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Not on record for this CVE: EPSS history · patch commit or PR link · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-88 · Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records