AUGUST 4, 2026
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Case File

CVE-2021-26829

MEDIUM · CVSS 5.4 EPSS 48.05% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-11 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CISA KEV Details

Status: This CVE is listed in CISA's Known Exploited Vulnerabilities catalog.

Ransomware use: Unknown

Added to KEV: 2025-11-28

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE
CVE-2021-26829
Severity
MEDIUM
CVSS
5.4
EPSS
48.05%
Windows Linux

Original NVD Description

OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows stored XSS via system_settings.shtm.