Coverage › CVE-2021-26829
CVE-2021-26829 Unmapped
OpenPLC ScadaBR Cross-site Scripting Vulnerability
- Vendor / product
- OpenPLC — ScadaBR
- Description (CISA)
- OpenPLC ScadaBR contains a cross-site scripting vulnerability via system_settings.shtm.
- Added to KEV
- 2025-11-28 — after the latest CTID mapping snapshot (2025-07-28)
- Due date
- 2025-12-19
- 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.
- Known ransomware use
- Unknown
- CWE
- CWE-79
- CISA notes
- This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/SCADA-LTS/Scada-LTS/pull/3211
https://nvd.nist.gov/vuln/detail/CVE-2021-26829 - Elsewhere
- cve.org · NVD · CISA KEV · JSON
ATT&CK techniques
No public source states how this vulnerability is exploited in ATT&CK terms.
The only authoritative CVE → ATT&CK mapping in the open — CTID's Mappings Explorer, pinned to a KEV snapshot of 2025-07-28 and ATT&CK 16.1 — does not include CVE-2021-26829. This entry was added to KEV on 2025-11-28, after that snapshot; of the 283 entries added since, 0 have a mapping. CISA's catalogue carries no technique field. kevmap does not infer techniques from the CWE (CWE-79) — here is why — and does not guess.
This page will change state automatically if a mapping is published. What is shown above is everything CISA publishes about the entry.