CVE-2023-0321 — Campbell Scientific dataloggers CR6, CR300, CR800, CR1000 and CR3000 may allow a

Campbell Scientific dataloggers CR6, CR300, CR800, CR1000 and CR3000 may allow an attacker to download configuration files, which may contain sensitive information about the internal network. From factory defaults, the mentioned datalogges have HTTP and PakBus enabled. The device

01What is this vulnerability?

Campbell Scientific dataloggers CR6, CR300, CR800, CR1000 and CR3000 may allow an attacker to download configuration files, which may contain sensitive information about the internal network. From factory defaults, the mentioned datalogges have HTTP and PakBus enabled. The devices, with the default configuration, allow this situation via the PakBus port. The exploitation of this vulnerability may…

02Affected products

Vendor	Product	Versions
Campbell Scientific	CR6	all version
Campbell Scientific	CR300	all version
Campbell Scientific	CR800	all version
Campbell Scientific	CR1000	all version
Campbell Scientific	CR3000	all version

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-01-25T00:00:00.000Z
• Last modified: 2025-03-27T20:09:03.149Z

09References

• www.incibe-cert.es — https://www.incibe-cert.es/en/early-warning/ics-advisories/disclosure-sensitive-…
• www.hackplayers.com — https://www.hackplayers.com/2023/01/cve-2023-0321-info-sensible-campbell.html