How severe is CVE-2021-43048?

CVE-2021-43048 has a CVSS 3.x base score of 9.8, 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 high, and availability high.

Is CVE-2021-43048 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43048?

CVE-2021-43048 affects Tibco Partnerexpress. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43048?

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-2021-43048 published?

CVE-2021-43048 was published on 2021-11-16 and last updated on 2026-06-17.

CVE-2021-43048

CVE-2021-43048 is a critical-severity vulnerability in Tibco Partnerexpress with a CVSS 3.x base score of 9.8. 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-1021.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1021
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 a vulnerability that theoretically allows an unauthenticated attacker with network access to execute a clickjacking attack on the affected system. A successful attack using this vulnerability does not require 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-2021-43048?: The Interior Server and Gateway Server components of TIBCO Software Inc.'s TIBCO PartnerExpress contain a vulnerability that theoretically allows an unauthenticated attacker with network access to execute a clickjacking attack on the affected system. A successful attack using this vulnerability does not require 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-2021-43048?: CVE-2021-43048 has a CVSS 3.x base score of 9.8, 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 high, and availability high.
Is CVE-2021-43048 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43048?: CVE-2021-43048 affects Tibco Partnerexpress. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43048?: 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-2021-43048 published?: CVE-2021-43048 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-2021-43047 — Critical (CVSS 9.0): The Interior Server and Gateway Server components of TIBCO Software Inc.'s TIBCO PartnerExpress contain easily…
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…

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