CVE-2021-38410 | AVEVA PCS Portal Uncontrolled Search Path Element

AVEVA Software Platform Common Services (PCS) Portal versions 4.5.2, 4.5.1, 4.5.0, and 4.4.6 are vulnerable to DLL hijacking through an uncontrolled search path element, which may allow an attacker control to one or more locations in the search path.

Published: 2022-07-27 Last update: 2025-04-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-38410 is rated Low Risk (33.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.21%). 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-2021-38410

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 2026-06-15 0.05% 0.21% +0.16%
2 2025-07-29 0.04% 0.05% +0.01%
3 2025-03-30 — 0.04% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-38410

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.3 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
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.
 1.3 5.9 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
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.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2021-38410

Affected software / configurations for CVE-2021-38410

Vendor Product Version Raw CPE
aveva batch_management 2020 cpe:2.3:a:aveva:batch_management:2020:*:*:*:*:*:*:*
aveva enterprise_data_management 2020 cpe:2.3:a:aveva:enterprise_data_management:2020:*:*:*:*:*:*:*
aveva manufacturing_execution_system 2020 cpe:2.3:a:aveva:manufacturing_execution_system:2020:*:*:*:*:*:*:*
aveva mobile_operator 2020 cpe:2.3:a:aveva:mobile_operator:2020:*:*:*:*:*:*:*
aveva platform_common_services 4.4.6 cpe:2.3:a:aveva:platform_common_services:4.4.6:*:*:*:*:*:*:*
aveva platform_common_services 4.5.0 cpe:2.3:a:aveva:platform_common_services:4.5.0:*:*:*:*:*:*:*
aveva platform_common_services 4.5.1 cpe:2.3:a:aveva:platform_common_services:4.5.1:*:*:*:*:*:*:*
aveva platform_common_services 4.5.2 cpe:2.3:a:aveva:platform_common_services:4.5.2:*:*:*:*:*:*:*
aveva system_platform 2020 cpe:2.3:a:aveva:system_platform:2020:-:*:*:*:*:*:*
aveva system_platform 2020 cpe:2.3:a:aveva:system_platform:2020:r2:*:*:*:*:*:*
aveva system_platform 2020 cpe:2.3:a:aveva:system_platform:2020:r2_p01:*:*:*:*:*:*
aveva work_tasks 2020 cpe:2.3:a:aveva:work_tasks:2020:-:*:*:*:*:*:*
aveva work_tasks 2020 cpe:2.3:a:aveva:work_tasks:2020:update_1:*:*:*:*:*:*

References for CVE-2021-38410

cvelogic Threat Intelligence