ARC Informatique PcVue Access to Critical Private Variable via Public Method
Summary
| CVE | CVE-2020-26868 |
|---|---|
| State | PUBLISHED |
| Assigner | Kaspersky |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2020-10-12 14:15:12 UTC |
| Updated | 2026-07-09 18:32:08 UTC |
| Description | ARC Informatique PcVue prior to version 12.0.17 is vulnerable to a denial-of-service attack due to the ability of an unauthorized user to modify information used to validate messages sent by legitimate web clients. This issue also affects third-party systems based on the Web Services Toolkit. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.021340000 probability, percentile 0.798570000 (date 2026-07-13)
Problem Types: CWE-767 | CWE-668 | CWE-767 CWE-767: Access to Critical Private Variable via Public Method
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | DECLARED | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 5 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
AV:N/AC:L/Au:N/C:N/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | ARC Informatique | PcVue | affected unspecified 12.0.17 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Security bulletin | af854a3a-2127-422b-91ae-364da2661108 | www.pcvuesolutions.com | Permissions Required, Vendor Advisory |
| ARC Informatique PcVue | CISA | af854a3a-2127-422b-91ae-364da2661108 | us-cert.cisa.gov | Third Party Advisory, US Government Resource |
| KLCERT-20-016: Denial-of-Service in ARC Informatique PcVue | Kaspersky ICS CERT | af854a3a-2127-422b-91ae-364da2661108 | ics-cert.kaspersky.com | Broken Link |
| Security Alerts | PcVue Solutions | af854a3a-2127-422b-91ae-364da2661108 | www.pcvuesolutions.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Sergey Temnikov and Andrey Muravitsky of Kaspersky Lab reported these vulnerabilities to ARC Informatique. (en)
Additional Advisory Data
Solutions
CNA: ARC Informatique recommends upgrading PcVue to v12.0.17. Contact PcVue Support to receive instructions on downloading and installing the latest software version.
Workarounds
CNA: The following mitigations and workarounds have been identified by ARC Informatique to help reduce risk: Uninstall the web and mobile backend. Users not using the affected components should uninstall them. If the components are not required, do not install them. Change default configuration if using components prior to v12.0. If taking advantage of the web and mobile back features with a product version up to v11.2, change the following configuration item manually to prevent remote code execution In the file <PcVue installation directory>\Bin\PropertyServer.config>, change the following element and set it to “Low” (defaults to “Full”): <serverProviders> <formatter ref=”binary” typeFilterLevel=”Low” /> </serverProviders> This workaround cannot be applied to PcVue v12.0 Harden firewall configuration by ensuring that incoming connections on the corresponding port are authorized only if initiated by the IIS Web Server process. The listening port is configurable (default 8090) and may have been changed on the system using the Application Explorer.