CVE-2020-4446

IBM Business Process Manager 8.0, 8.5, and 8.6 and IBM Business Automation Workflow 18.0 and 19.0 could allow a remote attacker to bypass security restrictions, caused by the failure to perform insufficient authorization checks. IBM X-Force ID: 181126.

Published: 2020-05-06 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-4446 is rated Low Risk (27/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.08%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-4446

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2023-03-07 1.05% 0.08% -0.98%
2 2022-04-01 4.50% 1.05% -3.44%
3 2022-02-04 — 4.50% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-4446

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 [email protected]
4.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2020-4446

Affected software / configurations for CVE-2020-4446

Vendor Product Version Raw CPE
ibm business_automation_workflow >= 18.0.0.0, <= 18.0.0.2 cpe:2.3:a:ibm:business_automation_workflow:*:*:*:*:*:*:*:*
ibm business_automation_workflow >= 19.0.0.1, <= 19.0.0.3 cpe:2.3:a:ibm:business_automation_workflow:*:*:*:*:*:*:*:*
ibm business_process_manager >= 8.0.0.0, <= 8.0.1.3 cpe:2.3:a:ibm:business_process_manager:*:*:*:*:*:*:*:*
ibm business_process_manager >= 8.5.0.0, <= 8.5.7.0 cpe:2.3:a:ibm:business_process_manager:*:*:*:*:*:*:*:*
ibm business_process_manager 8.6.0.0 cpe:2.3:a:ibm:business_process_manager:8.6.0.0:*:*:*:*:*:*:*

References for CVE-2020-4446

cvelogic Threat Intelligence