CVE-2020-4495

IBM Jazz Foundation and IBM Engineering products could allow a remote attacker to bypass security restrictions, caused by improper access control. By sending a specially-crafted request to the REST API, an attacker could exploit this vulnerability to bypass access restrictions, and execute arbitrary actions with administrative privileges. IBM X-Force ID: 182114.

Published: 2021-06-02 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-4495 is rated Moderate Risk (63/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.30%). Review affected assets and schedule remediation.

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-2020-4495

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 2026-06-04 1.51% 1.30% -0.21%
2 2025-11-21 2.15% 1.51% -0.64%
3 2025-11-18 — 2.15% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-4495

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.8 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
9.0 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2020-4495

Affected software / configurations for CVE-2020-4495

Vendor Product Version Raw CPE
ibm collaborative_lifecycle_management 6.0.6 cpe:2.3:a:ibm:collaborative_lifecycle_management:6.0.6:*:*:*:*:*:*:*
ibm collaborative_lifecycle_management 6.0.6.1 cpe:2.3:a:ibm:collaborative_lifecycle_management:6.0.6.1:*:*:*:*:*:*:*
ibm engineering_lifecycle_management 7.0 cpe:2.3:a:ibm:engineering_lifecycle_management:7.0:*:*:*:*:*:*:*
ibm engineering_lifecycle_management 7.0.1 cpe:2.3:a:ibm:engineering_lifecycle_management:7.0.1:*:*:*:*:*:*:*
ibm engineering_lifecycle_management 7.0.2 cpe:2.3:a:ibm:engineering_lifecycle_management:7.0.2:*:*:*:*:*:*:*
ibm engineering_lifecycle_optimization_-_engineering_insights 7.0 cpe:2.3:a:ibm:engineering_lifecycle_optimization_-_engineering_insights:7.0:*:*:*:*:*:*:*
ibm engineering_lifecycle_optimization_-_engineering_insights 7.0.1 cpe:2.3:a:ibm:engineering_lifecycle_optimization_-_engineering_insights:7.0.1:*:*:*:*:*:*:*
ibm engineering_lifecycle_optimization_-_engineering_insights 7.0.2 cpe:2.3:a:ibm:engineering_lifecycle_optimization_-_engineering_insights:7.0.2:*:*:*:*:*:*:*
ibm engineering_lifecycle_optimization_-_publishing 7.0 cpe:2.3:a:ibm:engineering_lifecycle_optimization_-_publishing:7.0:*:*:*:*:*:*:*
ibm engineering_lifecycle_optimization_-_publishing 7.0.1 cpe:2.3:a:ibm:engineering_lifecycle_optimization_-_publishing:7.0.1:*:*:*:*:*:*:*
ibm engineering_lifecycle_optimization_-_publishing 7.0.2 cpe:2.3:a:ibm:engineering_lifecycle_optimization_-_publishing:7.0.2:*:*:*:*:*:*:*
ibm engineering_test_management 7.0.0 cpe:2.3:a:ibm:engineering_test_management:7.0.0:*:*:*:*:*:*:*
ibm engineering_test_management 7.0.1 cpe:2.3:a:ibm:engineering_test_management:7.0.1:*:*:*:*:*:*:*
ibm rational_doors_next_generation 6.0.6 cpe:2.3:a:ibm:rational_doors_next_generation:6.0.6:*:*:*:*:*:*:*
ibm rational_doors_next_generation 6.0.6.1 cpe:2.3:a:ibm:rational_doors_next_generation:6.0.6.1:*:*:*:*:*:*:*
ibm rational_doors_next_generation 7.0 cpe:2.3:a:ibm:rational_doors_next_generation:7.0:*:*:*:*:*:*:*
ibm rational_doors_next_generation 7.0.1 cpe:2.3:a:ibm:rational_doors_next_generation:7.0.1:*:*:*:*:*:*:*
ibm rational_doors_next_generation 7.0.2 cpe:2.3:a:ibm:rational_doors_next_generation:7.0.2:*:*:*:*:*:*:*
ibm rational_engineering_lifecycle_manager 6.0.6 cpe:2.3:a:ibm:rational_engineering_lifecycle_manager:6.0.6:*:*:*:*:*:*:*
ibm rational_engineering_lifecycle_manager 6.0.6.1 cpe:2.3:a:ibm:rational_engineering_lifecycle_manager:6.0.6.1:*:*:*:*:*:*:*
ibm rational_quality_manager 6.0.6 cpe:2.3:a:ibm:rational_quality_manager:6.0.6:*:*:*:*:*:*:*
ibm rational_quality_manager 6.0.6.1 cpe:2.3:a:ibm:rational_quality_manager:6.0.6.1:*:*:*:*:*:*:*
ibm removable_media_manager 6.0.6 cpe:2.3:a:ibm:removable_media_manager:6.0.6:*:*:*:*:*:*:*
ibm removable_media_manager 6.0.6.1 cpe:2.3:a:ibm:removable_media_manager:6.0.6.1:*:*:*:*:*:*:*
ibm removable_media_manager 7.0 cpe:2.3:a:ibm:removable_media_manager:7.0:*:*:*:*:*:*:*

References for CVE-2020-4495

cvelogic Threat Intelligence