CISA Warns of ScadaBR Vulnerability After Hacktivist ICS Attack
Source SecurityWeek
Exploited in the wild · KEV due 19 Dec 2025 : apply the vendor's fix or mitigations to affected systems now.
Data as of 2 Dec 2025, 15:45 UTC
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else.
Exploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 11 Jun 2021
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 4.5 years after disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE published
on cve.org
, t = 0
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, 4.5 years after disclosure
KEV remediation due
US federal deadline
, 4.5 years after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
AI-suggested
1. Apply vendor-provided patches or updates for ScadaBR as soon as they become available to address CVE-2021-26829 directly. 2. Implement network segmentation to isolate ICS networks from corporate and external networks, reducing attack surface exposure. 3. Enforce strict access controls and multi-factor authentication for all users accessing SCADA systems to prevent unauthorized access. 4. Conduct continuous monitoring and anomaly detection on ICS network traffic to identify suspicious activities early. 5. Regularly audit and update ICS configurations to follow security best practices and minimize vulnerabilities. 6. Develop and test incident response plans specific to ICS environments to ensure rapid containment and recovery in case of exploitation. 7. Train ICS operators and security personnel on recognizing and responding to cyber threats targeting SCADA systems. 8. Collaborate with national cybersecurity agencies and industry groups to stay informed about emerging threats and mitigation strategies related to ScadaBR and ICS security.
Description
CISA has added CVE-2021-26829 to its Known Exploited Vulnerabilities (KEV) catalog. The post CISA Warns of ScadaBR Vulnerability After Hacktivist ICS Attack appeared first on SecurityWeek .