How severe is CVE-2026-36501?

CVE-2026-36501 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-36501 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-36501?

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

Does CVE-2026-36501 have an EU (EUVD) identifier?

Yes. CVE-2026-36501 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34867.

When was CVE-2026-36501 published?

CVE-2026-36501 was published on 2026-06-05 and last updated on 2026-06-17.

CVE-2026-36501

CVE-2026-36501 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34867
Weakness: CWE-20
Published: 2026-06-05
Last modified: 2026-06-17

Description

An issue in the Externalizable.readExternal() component of Controller v12.0.5 allows attackers to cause a Denial of Service (DoS) via a crafted input.

Frequently asked questions

What is CVE-2026-36501?: An issue in the Externalizable.readExternal() component of Controller v12.0.5 allows attackers to cause a Denial of Service (DoS) via a crafted input.
How severe is CVE-2026-36501?: CVE-2026-36501 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-36501 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-36501?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-36501 have an EU (EUVD) identifier?: Yes. CVE-2026-36501 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34867.
When was CVE-2026-36501 published?: CVE-2026-36501 was published on 2026-06-05 and last updated on 2026-06-17.

References

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