How severe is CVE-2020-4794?

CVE-2020-4794 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2020-4794 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4794?

CVE-2020-4794 primarily affects Ibm Automation Workstream Services. In total, 51 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4794?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-4794 published?

CVE-2020-4794 was published on 2020-12-21 and last updated on 2026-06-17.

CVE-2020-4794

CVE-2020-4794 is a medium-severity vulnerability in Ibm Automation Workstream Services with a CVSS 3.x base score of 5.4. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 5.5
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Ibm Automation Workstream Services
Published: 2020-12-21
Last modified: 2026-06-17

Description

IBM Automation Workstream Services 19.0.3, 20.0.1, 20.0.2, IBM Business Automation Workflow 18.0, 19.0, and 20.0 and IBM Business Process Manager 8.6 could allow an authenticated user to obtain sensitive information or cuase a denial of service due to iimproper authorization checking. IBM X-Force ID: 189445.

Frequently asked questions

What is CVE-2020-4794?: IBM Automation Workstream Services 19.0.3, 20.0.1, 20.0.2, IBM Business Automation Workflow 18.0, 19.0, and 20.0 and IBM Business Process Manager 8.6 could allow an authenticated user to obtain sensitive information or cuase a denial of service due to iimproper authorization checking. IBM X-Force ID: 189445.
How severe is CVE-2020-4794?: CVE-2020-4794 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2020-4794 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4794?: CVE-2020-4794 primarily affects Ibm Automation Workstream Services. In total, 51 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4794?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4794 published?: CVE-2020-4794 was published on 2020-12-21 and last updated on 2026-06-17.

References

Affected products (51)

cpe:2.3:a:ibm:automation_workstream_services:19.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:automation_workstream_services:20.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:automation_workstream_services:20.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.0.0:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.0.0:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.1.0:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.1.0:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.1.1:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.1.1:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.1.2:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.1.2:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.1.3:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.0.1.3:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.0.0:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.0.0:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.0.1:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.0.1:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.0.2:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.0.2:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.5.0:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.5.0:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.6.0:-:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.6.0:-:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.6.1:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.6.1:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.6.2:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.6.2:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:*:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:*:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201606:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201606:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201609:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201609:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201612:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201612:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201703:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201703:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201706:*:*:express:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.5.7.0:cf201706:*:*:standard:*:*:*
cpe:2.3:a:ibm:business_process_manager:8.6:*:*:*:express:*:*:*

Other CWE-863 (Incorrect Authorization) vulnerabilities

CVE-2026-48286 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9396 and earlier are affected by an Incorrect Authorization…
CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…
CVE-2026-44330 — Critical (CVSS 10.0): free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the…
CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-863 (Incorrect Authorization) vulnerabilities →