How severe is CVE-2026-21765?

CVE-2026-21765 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-21765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21765?

CVE-2026-21765 affects Hcltech Bigfix Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-21765?

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-2026-21765 have an EU (EUVD) identifier?

Yes. CVE-2026-21765 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18095.

When was CVE-2026-21765 published?

CVE-2026-21765 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-21765

CVE-2026-21765 is a high-severity vulnerability in Hcltech Bigfix Platform with a CVSS 3.x base score of 8.8. 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-276.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18095
Weakness: CWE-276
Affected product: Hcltech Bigfix Platform
Published: 2026-04-02
Last modified: 2026-06-17

Description

HCL BigFix Platform is affected by insecure permissions on private cryptographic keys. The private cryptographic keys located on a Windows host machine might be subject to overly permissive file system permissions.

Frequently asked questions

What is CVE-2026-21765?: HCL BigFix Platform is affected by insecure permissions on private cryptographic keys. The private cryptographic keys located on a Windows host machine might be subject to overly permissive file system permissions.
How severe is CVE-2026-21765?: CVE-2026-21765 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-21765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21765?: CVE-2026-21765 affects Hcltech Bigfix Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-21765?: 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-2026-21765 have an EU (EUVD) identifier?: Yes. CVE-2026-21765 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18095.
When was CVE-2026-21765 published?: CVE-2026-21765 was published on 2026-04-02 and last updated on 2026-06-17.

References

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0129906

Affected products (1)

cpe:2.3:a:hcltech:bigfix_platform:*:*:*:*:*:*:*:*

More vulnerabilities in Hcltech Bigfix Platform

CVE-2023-37536 — High (CVSS 8.2): An integer overflow in xerces-c++ 3.2.3 in BigFix Platform allows remote attackers to cause out-of-bound access via…
CVE-2024-42193 — High (CVSS 8.1): HCL BigFix Web Reports' service communicates over HTTPS but exhibits a weakness in its handling of SSL certificate…
CVE-2023-37520 — High (CVSS 7.7): Unauthenticated Stored Cross-Site Scripting (XSS) vulnerability identified in BigFix Server version 9.5.12.68,…
CVE-2023-37519 — High (CVSS 7.7): Unauthenticated Stored Cross-Site Scripting (XSS) vulnerability. This XSS vulnerability is in the Download Status…
CVE-2020-14254 — High (CVSS 7.5): TLS-RSA cipher suites are not disabled in HCL BigFix Inventory up to v10.0.2. If TLS 2.0 and secure ciphers are not…
CVE-2022-42453 — Medium (CVSS 6.9): There are insufficient warnings when a Fixlet is imported by a user. The warning message currently assumes the owner of…

All CVEs affecting Hcltech Bigfix Platform →

Other CWE-276 (Incorrect Default Permissions) vulnerabilities

CVE-2022-42150 — Critical (CVSS 10.0): TinyLab linux-lab v1.1-rc1 and cloud-labv0.8-rc2, v1.1-rc1 are vulnerable to insecure permissions. The default…
CVE-2020-29492 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2020-29491 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2025-40585 — Critical (CVSS 9.9): A vulnerability has been identified in Energy Services (All versions with G5DFR). Affected solutions using G5DFR…
CVE-2019-19896 — Critical (CVSS 9.9): In IXP EasyInstall 6.2.13723, there is Remote Code Execution via weak permissions on the Engine Service share. The…
CVE-2020-37129 — Critical (CVSS 9.8): Memu Play 7.1.3 contains an insecure folder permissions vulnerability that allows low-privileged users to modify the…

Browse all CWE-276 (Incorrect Default Permissions) vulnerabilities →