How severe is CVE-2019-8991?

CVE-2019-8991 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-8991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-8991?

CVE-2019-8991 primarily affects Tibco Activematrix Bpm. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-8991?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-8991 published?

CVE-2019-8991 was published on 2019-04-24 and last updated on 2026-06-17.

CVE-2019-8991

CVE-2019-8991 is a high-severity vulnerability in Tibco Activematrix Bpm with a CVSS 3.x base score of 8.8. 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-79.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Tibco Activematrix Bpm
Published: 2019-04-24
Last modified: 2026-06-17

Description

The administrator web interface of TIBCO Software Inc.'s TIBCO ActiveMatrix BPM, TIBCO ActiveMatrix BPM Distribution for TIBCO Silver Fabric, TIBCO ActiveMatrix Policy Director, TIBCO ActiveMatrix Service Bus, TIBCO ActiveMatrix Service Grid, TIBCO Silver Fabric Enabler for ActiveMatrix BPM, and TIBCO Silver Fabric Enabler for ActiveMatrix Service Grid contains multiple vulnerabilities that may allow for cross-site scripting (XSS) and cross-site request forgery (CSRF) attacks. Affected releases are TIBCO Software Inc.'s TIBCO ActiveMatrix BPM: versions up to and including 4.2.0, TIBCO ActiveMatrix BPM Distribution for TIBCO Silver Fabric: versions up to and including 4.2.0, TIBCO ActiveMatrix Policy Director: versions up to and including 1.1.0, TIBCO ActiveMatrix Service Bus: versions up to and including 3.3.0, TIBCO ActiveMatrix Service Grid: versions up to and including 3.3.1, TIBCO Silver Fabric Enabler for ActiveMatrix BPM: versions up to and including 1.4.1, and TIBCO Silver Fabric Enabler for ActiveMatrix Service Grid: versions up to and including 1.3.1.

Frequently asked questions

What is CVE-2019-8991?: The administrator web interface of TIBCO Software Inc.'s TIBCO ActiveMatrix BPM, TIBCO ActiveMatrix BPM Distribution for TIBCO Silver Fabric, TIBCO ActiveMatrix Policy Director, TIBCO ActiveMatrix Service Bus, TIBCO ActiveMatrix Service Grid, TIBCO Silver Fabric Enabler for ActiveMatrix BPM, and TIBCO Silver Fabric Enabler for ActiveMatrix Service Grid contains multiple vulnerabilities that may allow for cross-site scripting (XSS) and cross-site request forgery (CSRF) attacks. Affected releases are TIBCO Software Inc.'s TIBCO ActiveMatrix BPM: versions up to and including 4.2.0, TIBCO ActiveMatrix BPM Distribution for TIBCO Silver Fabric: versions up to and including 4.2.0, TIBCO ActiveMatrix Policy Director: versions up to and including 1.1.0, TIBCO ActiveMatrix Service Bus: versions up to and including 3.3.0, TIBCO ActiveMatrix Service Grid: versions up to and including 3.3.1, TIBCO Silver Fabric Enabler for ActiveMatrix BPM: versions up to and including 1.4.1, and TIBCO Silver Fabric Enabler for ActiveMatrix Service Grid: versions up to and including 1.3.1.
How severe is CVE-2019-8991?: CVE-2019-8991 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-8991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-8991?: CVE-2019-8991 primarily affects Tibco Activematrix Bpm. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-8991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-8991 published?: CVE-2019-8991 was published on 2019-04-24 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:tibco:activematrix_bpm:*:*:*:*:*:*:*:*
cpe:2.3:a:tibco:activematrix_bpm:*:*:*:*:*:silver_fabric:*:*
cpe:2.3:a:tibco:activematrix_policy_director:*:*:*:*:*:*:*:*
cpe:2.3:a:tibco:activematrix_service_bus:*:*:*:*:*:*:*:*
cpe:2.3:a:tibco:activematrix_service_grid:*:*:*:*:*:silver_fabric:*:*
cpe:2.3:a:tibco:activematrix_service_grid:*:*:*:*:*:*:*:*
cpe:2.3:a:tibco:silver_fabric_enabler:*:*:*:*:*:activematrix_service_grid:*:*
cpe:2.3:a:tibco:silver_fabric_enabler:*:*:*:*:*:activematrix_bpm:*:*

More vulnerabilities in Tibco Activematrix Bpm

CVE-2019-8993 — Critical (CVSS 9.8): The administrative web server component of TIBCO Software Inc.'s TIBCO ActiveMatrix BPM, TIBCO ActiveMatrix BPM…
CVE-2010-4495 — Critical (CVSS 9.0): Unspecified vulnerability in the ActiveMatrix Runtime component in TIBCO ActiveMatrix Service Grid 3.0.0, 3.0.1, and…
CVE-2019-8992 — High (CVSS 8.8): The administrative server component of TIBCO Software Inc.'s TIBCO ActiveMatrix BPM, TIBCO ActiveMatrix BPM…
CVE-2019-8995 — Medium (CVSS 6.1): The workspace client, openspace client, and app development client of TIBCO Software Inc.'s TIBCO ActiveMatrix BPM,…
CVE-2012-0689 — Medium (CVSS 5.0): The server in TIBCO ActiveMatrix Platform in TIBCO Silver Fabric ActiveMatrix Service Grid Distribution 3.1.3, Service…
CVE-2012-0687 — Medium (CVSS 5.0): TIBCO ActiveMatrix Runtime Platform in Service Grid and Service Bus 2.x before 2.3.2 and BusinessWorks Service Engine…

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