How severe is CVE-2026-5300?

CVE-2026-5300 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-5300 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5300?

CVE-2026-5300 affects Coolercontrol Coolercontrold. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5300?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-5300 have an EU (EUVD) identifier?

Yes. CVE-2026-5300 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20457.

When was CVE-2026-5300 published?

CVE-2026-5300 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-5300

CVE-2026-5300 is a medium-severity vulnerability in Coolercontrol Coolercontrold with a CVSS 3.x base score of 5.9. 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-306.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20457
Weakness: CWE-306
Affected product: Coolercontrol Coolercontrold
Published: 2026-04-08
Last modified: 2026-06-17

Description

Unauthenticated functionality in CoolerControl/coolercontrold <4.0.0 allows unauthenticated attackers to view and modify potentially sensitive data via HTTP requests

Frequently asked questions

What is CVE-2026-5300?: Unauthenticated functionality in CoolerControl/coolercontrold <4.0.0 allows unauthenticated attackers to view and modify potentially sensitive data via HTTP requests
How severe is CVE-2026-5300?: CVE-2026-5300 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-5300 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5300?: CVE-2026-5300 affects Coolercontrol Coolercontrold. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5300?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5300 have an EU (EUVD) identifier?: Yes. CVE-2026-5300 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20457.
When was CVE-2026-5300 published?: CVE-2026-5300 was published on 2026-04-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:coolercontrol:coolercontrold:*:*:*:*:*:*:*:*

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