How severe is CVE-2021-43047?

CVE-2021-43047 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-43047 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43047?

CVE-2021-43047 affects Tibco Partnerexpress. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43047?

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-2021-43047 published?

CVE-2021-43047 was published on 2021-11-16 and last updated on 2026-06-17.

CVE-2021-43047

CVE-2021-43047 is a critical-severity vulnerability in Tibco Partnerexpress with a CVSS 3.x base score of 9.0. 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-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
CVSS v2: 8.5
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Tibco Partnerexpress
Published: 2021-11-16
Last modified: 2026-06-17

Description

The Interior Server and Gateway Server components of TIBCO Software Inc.'s TIBCO PartnerExpress contain easily exploitable Stored and Reflected Cross Site Scripting (XSS) vulnerabilities that allow a low privileged attacker to social engineer a legitimate user with network access to execute scripts targeting the affected system or the victim's local system. A successful attack using this vulnerability requires human interaction from a person other than the attacker. Affected releases are TIBCO Software Inc.'s TIBCO PartnerExpress: versions 6.2.1 and below.

Frequently asked questions

What is CVE-2021-43047?: The Interior Server and Gateway Server components of TIBCO Software Inc.'s TIBCO PartnerExpress contain easily exploitable Stored and Reflected Cross Site Scripting (XSS) vulnerabilities that allow a low privileged attacker to social engineer a legitimate user with network access to execute scripts targeting the affected system or the victim's local system. A successful attack using this vulnerability requires human interaction from a person other than the attacker. Affected releases are TIBCO Software Inc.'s TIBCO PartnerExpress: versions 6.2.1 and below.
How severe is CVE-2021-43047?: CVE-2021-43047 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-43047 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43047?: CVE-2021-43047 affects Tibco Partnerexpress. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43047?: 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-2021-43047 published?: CVE-2021-43047 was published on 2021-11-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tibco:partnerexpress:*:*:*:*:*:*:*:*

More vulnerabilities in Tibco Partnerexpress

CVE-2021-43048 — Critical (CVSS 9.8): The Interior Server and Gateway Server components of TIBCO Software Inc.'s TIBCO PartnerExpress contain a vulnerability…
CVE-2021-43046 — High (CVSS 7.5): The Interior Server and Gateway Server components of TIBCO Software Inc.'s TIBCO PartnerExpress contain an easily…
CVE-2020-27147 — Medium (CVSS 6.5): The REST API component of TIBCO Software Inc.'s TIBCO PartnerExpress contains a vulnerability that theoretically allows…

All CVEs affecting Tibco Partnerexpress →

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