How severe is CVE-2021-23274?

CVE-2021-23274 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-2021-23274 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23274?

CVE-2021-23274 primarily affects Tibco Api Exchange Gateway. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-23274?

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-2021-23274 published?

CVE-2021-23274 was published on 2021-03-23 and last updated on 2026-06-17.

CVE-2021-23274

CVE-2021-23274 is a critical-severity vulnerability in Tibco Api Exchange Gateway 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: 7.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1021
Affected product: Tibco Api Exchange Gateway
Published: 2021-03-23
Last modified: 2026-06-17

Description

The Config UI component of TIBCO Software Inc.'s TIBCO API Exchange Gateway and TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric contains 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 API Exchange Gateway: versions 2.3.3 and below and TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric: versions 2.3.3 and below.

Frequently asked questions

What is CVE-2021-23274?: The Config UI component of TIBCO Software Inc.'s TIBCO API Exchange Gateway and TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric contains 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 API Exchange Gateway: versions 2.3.3 and below and TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric: versions 2.3.3 and below.
How severe is CVE-2021-23274?: CVE-2021-23274 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-2021-23274 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23274?: CVE-2021-23274 primarily affects Tibco Api Exchange Gateway. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-23274?: 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-2021-23274 published?: CVE-2021-23274 was published on 2021-03-23 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:tibco:api_exchange_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:tibco:api_exchange_gateway_distribution:*:*:*:*:*:silver_fabric:*:*

More vulnerabilities in Tibco Api Exchange Gateway

CVE-2019-11208 — Critical (CVSS 9.9): The authorization component of TIBCO Software Inc.'s TIBCO API Exchange Gateway, and TIBCO API Exchange Gateway…

All CVEs affecting Tibco Api Exchange Gateway →

Other CWE-1021 vulnerabilities

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-2016-2496 — Critical (CVSS 9.8): The Framework UI permission-dialog implementation in Android 6.x before 2016-06-01 allows attackers to conduct…
CVE-2021-21132 — Critical (CVSS 9.6): Inappropriate implementation in DevTools in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to…
CVE-2021-21111 — Critical (CVSS 9.6): Insufficient policy enforcement in WebUI in Google Chrome prior to 87.0.4280.141 allowed an attacker who convinced a…
CVE-2024-10004 — Critical (CVSS 9.1): Opening an external link to an HTTP website when Firefox iOS was previously closed and had an HTTPS tab open could in…
CVE-2023-41897 — High (CVSS 8.8): Home assistant is an open source home automation. Home Assistant server does not set any HTTP security headers,…

Browse all CWE-1021 vulnerabilities →