CVE-2021-26264
MEDIUMCVSS 5.5/10EPSS 0.19%
Last modified
CVE-2021-26264 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A specially crafted script could cause the DeltaV Distributed Control System Controllers (All Versions) to restart and cause a denial-of-service condition.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.
Description
A specially crafted script could cause the DeltaV Distributed Control System Controllers (All Versions) to restart and cause a denial-of-service condition.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Emerson | Deltav Workstation | All versions |
| Emerson | Deltav Distributed Control System | All versions |
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-355-04Mitigation, Third Party Advisory, US Government Resource
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-355-04Mitigation, Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26264?
A specially crafted script could cause the DeltaV Distributed Control System Controllers (All Versions) to restart and cause a denial-of-service condition.
How severe is CVE-2021-26264?
CVE-2021-26264 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26264?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-26264?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST