PatchSiren cyber security CVE debrief

CVE-2020-2812 Festo Didactic SE CVE debrief

CVE-2020-2812 is an Oracle MySQL Server vulnerability in the Stored Procedure component that can be used by a high-privileged attacker with network access to trigger a hang or repeatable crash of MySQL Server. The supplied CVSS vector shows an availability-only impact, with no confidentiality or integrity impact recorded. In the supplied CISA CSAF advisory context, the issue is tied to Festo Didactic SE MES PC. The vendor remediation notes say Festo Didactic has released Factory Control Panel as a replacement for XAMPP on its MES PCs and that the current version includes fixes for these vulnerabilities.

Vendor: Festo Didactic SE
Product: MES PC
CVSS: MEDIUM 4.9
CISA KEV: Not listed in stored evidence
Original CVE published: 2024-02-27
Original CVE updated: 2026-01-27
Advisory published: 2024-02-27
Advisory updated: 2026-01-27

Who should care

Festo Didactic SE MES PC operators and administrators, teams responsible for any bundled MySQL/XAMPP components in those deployments, and defenders who manage privileged MySQL access over the network.

Technical summary

The vulnerable component is Oracle MySQL Server: Stored Procedure. A network attacker who already has high privileges can exploit the flaw through multiple protocols to cause service disruption, typically a hang or frequent repeatable crash. The supplied affected-version ranges are 5.6.47 and prior, 5.7.29 and prior, and 8.0.19 and prior.

Defensive priority

Medium

Recommended defensive actions

Check whether any MES PC deployment or related system is running an affected Oracle MySQL version or the vulnerable bundled component referenced in the advisory.
Obtain the current Factory Control Panel version from Festo technical support and replace XAMPP on MES PCs, as stated in the vendor remediation.
Restrict and monitor privileged MySQL accounts and limit network exposure to the database service to reduce the chance of a high-privilege network attack.
Apply CISA ICS recommended practices and defense-in-depth guidance to segment, harden, and monitor the environment.
Validate the update in a maintenance window and confirm the vulnerable component is no longer present after remediation.

Evidence notes

The supplied source item is CISA CSAF advisory ICSA-26-027-02, initially published on 2024-02-27 and later republished on 2026-01-27. Its description states that CVE-2020-2812 is a MySQL Server stored procedure vulnerability that can cause a hang or repeatable crash. The remediation entry says Factory Control Panel replaces XAMPP on MES PCs and includes fixes, obtainable through Festo technical support.

Official resources

CISA's CSAF advisory record for ICSA-26-027-02 was initially published on 2024-02-27 and later republished/updated on 2026-01-27. The CVE record and advisory identify the issue as CVE-2020-2812.