How severe is CVE-2023-0321?

CVE-2023-0321 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-0321 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0321?

CVE-2023-0321 primarily affects Campbellsci Cr6 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-0321?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-0321 published?

CVE-2023-0321 was published on 2023-01-26 and last updated on 2026-06-17.

CVE-2023-0321

CVE-2023-0321 is a critical-severity vulnerability in Campbellsci Cr6 Firmware with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Campbellsci Cr6 Firmware
Published: 2023-01-26
Last modified: 2026-06-17

Description

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 allow an attacker to download, modify, and upload new configuration files.

Frequently asked questions

What is CVE-2023-0321?: 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 allow an attacker to download, modify, and upload new configuration files.
How severe is CVE-2023-0321?: CVE-2023-0321 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-0321 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0321?: CVE-2023-0321 primarily affects Campbellsci Cr6 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-0321?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-0321 published?: CVE-2023-0321 was published on 2023-01-26 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:campbellsci:cr6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:campbellsci:cr300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:campbellsci:cr800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:campbellsci:cr1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:campbellsci:cr3000_firmware:*:*:*:*:*:*:*:*

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