How severe is CVE-2021-28824?

CVE-2021-28824 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-2021-28824 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-2021-28824?

CVE-2021-28824 primarily affects Tibco Activespaces. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-28824?

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-2021-28824 published?

CVE-2021-28824 was published on 2021-03-23 and last updated on 2026-06-17.

CVE-2021-28824

CVE-2021-28824 is a high-severity vulnerability in Tibco Activespaces 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-863.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Tibco Activespaces
Published: 2021-03-23
Last modified: 2026-06-17

Description

The Windows Installation component of TIBCO Software Inc.'s TIBCO ActiveSpaces - Community Edition, TIBCO ActiveSpaces - Developer Edition, and TIBCO ActiveSpaces - Enterprise Edition contains a vulnerability that theoretically allows a low privileged attacker with local access on some versions of the Windows operating system to insert malicious software. The affected component can be abused to execute the malicious software inserted by the attacker with the elevated privileges of the component. This vulnerability results from a lack of access restrictions on certain files and/or folders in the installation. Affected releases are TIBCO Software Inc.'s TIBCO ActiveSpaces - Community Edition: versions 4.5.0 and below, TIBCO ActiveSpaces - Developer Edition: versions 4.5.0 and below, and TIBCO ActiveSpaces - Enterprise Edition: versions 4.5.0 and below.

Frequently asked questions

What is CVE-2021-28824?: The Windows Installation component of TIBCO Software Inc.'s TIBCO ActiveSpaces - Community Edition, TIBCO ActiveSpaces - Developer Edition, and TIBCO ActiveSpaces - Enterprise Edition contains a vulnerability that theoretically allows a low privileged attacker with local access on some versions of the Windows operating system to insert malicious software. The affected component can be abused to execute the malicious software inserted by the attacker with the elevated privileges of the component. This vulnerability results from a lack of access restrictions on certain files and/or folders in the installation. Affected releases are TIBCO Software Inc.'s TIBCO ActiveSpaces - Community Edition: versions 4.5.0 and below, TIBCO ActiveSpaces - Developer Edition: versions 4.5.0 and below, and TIBCO ActiveSpaces - Enterprise Edition: versions 4.5.0 and below.
How severe is CVE-2021-28824?: CVE-2021-28824 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-2021-28824 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-2021-28824?: CVE-2021-28824 primarily affects Tibco Activespaces. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-28824?: 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-2021-28824 published?: CVE-2021-28824 was published on 2021-03-23 and last updated on 2026-06-17.

References

http://www.tibco.com/services/support/advisories

Affected products (3)

cpe:2.3:a:tibco:activespaces:*:*:*:*:community:*:*:*
cpe:2.3:a:tibco:activespaces:*:*:*:*:developer:*:*:*
cpe:2.3:a:tibco:activespaces:*:*:*:*:enterprise:*:*:*

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