Cyber Resilience

CVE-2021-23271

High

Published: 02 February 2021

Published
02 February 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0033 56.5th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-23271 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Tibco Ebx. Its CVSS base score is 8.0 (High).

Operationally, ranked in the top 43.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

The TIBCO EBX Web Server component of TIBCO Software Inc.'s TIBCO EBX contains a vulnerability that theoretically allows a low privileged attacker with network access to execute a Stored Cross Site Scripting (XSS) attack on the affected system. Affected releases…

more

are TIBCO Software Inc.'s TIBCO EBX: versions 5.9.12 and below.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

tibco
ebx
≤ 5.9.12

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References