What is CVE-2021-43048?

CVE-2021-43048 is a critical-severity vulnerability in Tibco Partnerexpress, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 9.8/10. Published 2021-11-16.

How severe is CVE-2021-43048?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Tibco Partnerexpress

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.

Published 2021-11-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (68.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.000

Affected products

Tibco Partnerexpress
Tibco Software Inc. Partnerexpress — versions unspecified

Weakness classification (CWE)

CWE-1021 — Improper Restriction of Rendered UI Layers or Frames (Clickjacking)

References

www.tibco.com/services/support/advisories (Vendor Advisory)
www.tibco.com/support/advisories/2021/11/tibco-security-advisory-november-16-20… (Vendor Advisory)

Frequently asked questions

What is CVE-2021-43048?: CVE-2021-43048 is a critical-severity vulnerability in Tibco Partnerexpress, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 9.8/10. Published 2021-11-16.
How severe is CVE-2021-43048?: Critical severity. CVSS v3 base score is 9.8 out of 10.