How severe is CVE-2026-21752?

CVE-2026-21752 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 high, integrity none, and availability none.

Is CVE-2026-21752 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-21752?

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.

When was CVE-2026-21752 published?

CVE-2026-21752 was published on 2026-08-24 and last updated on 2026-08-28.

CVE-2026-21752

CVE-2026-21752 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-1104.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1104
Published: 2026-08-24
Last modified: 2026-08-28

Description

HCL Hive is affected by a use of vulnerable third-party components which could allow an attacker unauthorized access or compromise of the system by exploiting publicly documented security flaws.

Frequently asked questions

What is CVE-2026-21752?: HCL Hive is affected by a use of vulnerable third-party components which could allow an attacker unauthorized access or compromise of the system by exploiting publicly documented security flaws.
How severe is CVE-2026-21752?: CVE-2026-21752 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 high, integrity none, and availability none.
Is CVE-2026-21752 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-21752?: 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.
When was CVE-2026-21752 published?: CVE-2026-21752 was published on 2026-08-24 and last updated on 2026-08-28.

References

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0131731

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