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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2021-26829

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

CVSS 5.4 · MediumBuzz score 45.4KEV listed

Buzz score

Why this CVE is surfacing

Buzz score total 45.4

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 13.9 · diversity 6.5 · KEV 25.0 · OTX 0.0 · PoC 0.0
Mention score
13.9
3 evidence mentions in the snapshot
Diversity score
6.5
2 sources across 1 categories
KEV score
25.0
Known exploited vulnerability present
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
3 source links · newest first
  • U.S. CISA adds a new an OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalogSecurity Affairs

    U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a new OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added an OpenPLC ScadaBR flaw, tracked as CVE-2021-26828 (CVSS Score of 8.7), to its Known Exploited Vulnerabilities (KEV) catalog. The vulnerability is an unrestricted upload of file with dangerous type vulnerability. “OpenPLC […]

    newssecurityaffairs.comDec 4, 2025, 9:56 PM
  • CISA Warns of ScadaBR Vulnerability After Hacktivist ICS AttackSecurityWeek

    CISA has added CVE-2021-26829 to its Known Exploited Vulnerabilities (KEV) catalog.

    newswww.securityweek.comDec 1, 2025, 11:06 AM
  • U.S. CISA adds an OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalogSecurity Affairs

    U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds an OpenPLC ScadaBR flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added an OpenPLC ScadaBR flaw, tracked as CVE-2021-26829 (CVSS score of 5.4), to its Known Exploited Vulnerabilities (KEV) catalog. The vulnerability is a cross-site scripting (XSS) flaw that impacts Windows and Linux versions via system_settings.shtm. […]

    newssecurityaffairs.comDec 1, 2025, 8:59 AM

Exploit code

Public exploit repository references

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0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

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