How severe is CVE-2021-43052?

CVE-2021-43052 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2021-43052 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43052?

CVE-2021-43052 primarily affects Tibco Ftl. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-43052?

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

When was CVE-2021-43052 published?

CVE-2021-43052 was published on 2022-01-11 and last updated on 2026-06-17.

CVE-2021-43052

CVE-2021-43052 is a critical-severity vulnerability in Tibco Ftl with a CVSS 3.x base score of 9.3. 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-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Tibco Ftl
Published: 2022-01-11
Last modified: 2026-06-17

Description

The Realm Server component of TIBCO Software Inc.'s TIBCO FTL - Community Edition, TIBCO FTL - Developer Edition, and TIBCO FTL - Enterprise Edition contains an easily exploitable vulnerability that allows authentication bypass due to a hard coded secret used in the default realm server of the affected system. Affected releases are TIBCO Software Inc.'s TIBCO FTL - Community Edition: versions 6.7.2 and below, TIBCO FTL - Developer Edition: versions 6.7.2 and below, and TIBCO FTL - Enterprise Edition: versions 6.7.2 and below.

Frequently asked questions

What is CVE-2021-43052?: The Realm Server component of TIBCO Software Inc.'s TIBCO FTL - Community Edition, TIBCO FTL - Developer Edition, and TIBCO FTL - Enterprise Edition contains an easily exploitable vulnerability that allows authentication bypass due to a hard coded secret used in the default realm server of the affected system. Affected releases are TIBCO Software Inc.'s TIBCO FTL - Community Edition: versions 6.7.2 and below, TIBCO FTL - Developer Edition: versions 6.7.2 and below, and TIBCO FTL - Enterprise Edition: versions 6.7.2 and below.
How severe is CVE-2021-43052?: CVE-2021-43052 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2021-43052 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43052?: CVE-2021-43052 primarily affects Tibco Ftl. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-43052?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-43052 published?: CVE-2021-43052 was published on 2022-01-11 and last updated on 2026-06-17.

References

Affected products (3)

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

More vulnerabilities in Tibco Ftl

CVE-2021-28820 — High (CVSS 8.8): The FTL Server (tibftlserver), FTL C API, FTL Golang API, FTL Java API, and FTL .Net API components of TIBCO Software…
CVE-2021-28819 — High (CVSS 8.8): The Windows Installation component of TIBCO Software Inc.'s TIBCO FTL - Community Edition, TIBCO FTL - Developer…
CVE-2019-11209 — High (CVSS 8.8): The realm configuration component of TIBCO Software Inc.'s TIBCO FTL Community Edition, TIBCO FTL Developer Edition,…
CVE-2021-43053 — High (CVSS 8.5): The Realm Server component of TIBCO Software Inc.'s TIBCO FTL - Community Edition, TIBCO FTL - Developer Edition, and…
CVE-2021-35497 — High (CVSS 7.5): The FTL Server (tibftlserver) and Docker images containing tibftlserver components of TIBCO Software Inc.'s TIBCO…
CVE-2018-12412 — High (CVSS 7.5): The realm server (tibrealmserver) component of TIBCO Software Inc. TIBCO FTL - Community Edition, TIBCO FTL - Developer…

All CVEs affecting Tibco Ftl →

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