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CVE-2023-38585· NVD / CVE Program· CNA jpcert

Improper authentication vulnerability in the CBC products allows a remote authenticated attacker to execute an arbitrary OS command on the d

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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% (FIRST EPSS); higher than 64.2% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

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

Improper authentication vulnerability in the CBC products allows a remote authenticated attacker to execute an arbitrary OS command on the device or alter its settings. As for the affected products/versions, see the detailed information provided by the vendor. Note that NR4H, NR8H, NR16H series and DR-16F, DR-8F, DR-4F, DR-16H, DR-8H, DR-4H, DR-4M41 series are no longer supported, therefore updates for those products are not provided.

HighCVSS 8.8 · v3.1—No exploit No fix recorded
Published
Aug 22, 2023
Updated
Jun 17, 2026
EPSS
1.0% · 64th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

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

Follow CVE-2023-38585

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

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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.

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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
cbcdr-4fx1 firmware
cbcdr-4fx1
cbcdr-16h firmware
cbcnr4h firmware
cbcnr4h
cbcnr8h firmware
cbcnr8h
cbcnr16h firmware
cbcnr16h
cbcdr-16f42a firmware
cbcdr-16f42a
cbcdr-16f45at firmware

and 34 more

Affected versions

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

  • cbc dr-16f42a firmwareall versions
  • cbc dr-16f45at firmwareall versions
  • cbc dr-16h firmwareall versions
  • cbc dr-16m52 firmwareall versions
  • cbc dr-16m52-av firmwareall versions
  • cbc dr-4fx1 firmwareall versions
  • cbc dr-4h firmwareall versions
  • cbc dr-4m51-av firmwareall versions
  • cbc dr-8f42a firmwareall versions
  • cbc dr-8f45at firmwareall versions
  • cbc dr-8h firmwareall versions
  • cbc dr-8m52-av firmwareall versions
  • cbc drh8-4m41-a firmwareall versions
  • cbc nr-16f82-16p firmwareall versions
  • cbc nr-16f85-8pra firmwareall versions
  • cbc nr-16m firmwareall versions
  • cbc nr-4f firmwareall versions
  • cbc nr-8f firmwareall versions
  • cbc nr16h firmwareall versions
  • cbc nr4h firmwareall versions

Versions reported by the vendor

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

  • CBC Co.,Ltd. DR-16F, DR-8F, DR-4F, DR-16H, DR-8H, DR-4H, DR-4M41 series

    • firmware all versionsaffected

  • CBC Co.,Ltd. DR-16M, DR-8M, DR-4M51 series

    • firmware all versionsaffected

  • CBC Co.,Ltd. NR-4F, NR-8F, NR-16F series

    • firmware all versionsaffected

  • CBC Co.,Ltd. NR-4M, NR-8M, NR-16M series

    • firmware all versionsaffected

  • CBC Co.,Ltd. NR4H, NR8H, NR16H series

    • firmware all versionsaffected

Same product

cbc: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-40144OS command injection vulnerability in the CBC products allows a remote authenticated attacker to execute an arbitrary OS command on the devi
    36Monitor
  • CVE-2023-40158Hidden functionality vulnerability in the CBC products allows a remote authenticated attacker to execute an arbitrary OS command on the devi
    35Monitor

Remediation

Which version to upgrade to

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

No fix version is recorded for this entry. Check the references for vendor advisories.

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

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

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

—

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2023-401441 days apartOS command injection vulnerability in the CBC products allows a remote authenticated attacker to execute an arbitrary OS command on the devi
    36Monitor
  • CVE-2023-401580 days apartHidden functionality vulnerability in the CBC products allows a remote authenticated attacker to execute an arbitrary OS command on the devi
    35Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • 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
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

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

nvd-primary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
app.use("/admin", requireSession, adminRouter);
// Route added later skips the middlewareapp.post("/admin-api/config", updateConfig);

Fixed

ts
const admin = express.Router();admin.use(requireSession, requireRole("admin"));
admin.post("/config", updateConfig);app.use("/admin", admin);

Attack context

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

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (2 more)

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

All records