CVE-2021-26264
CVE-2021-26264 is a medium-severity vulnerability in Emerson Deltav Workstation with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v2: 4.9
- EPSS exploit prediction: 0% (8th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-306
- Affected product: Emerson Deltav Workstation
- Published:
- Last modified:
Description
A specially crafted script could cause the DeltaV Distributed Control System Controllers (All Versions) to restart and cause a denial-of-service condition.
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 3.x base score of 6.1, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-26264 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-26264?
- CVE-2021-26264 primarily affects Emerson Deltav Workstation. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-26264?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-26264 published?
- CVE-2021-26264 was published on 2022-01-28 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:emerson:deltav_workstation:-:*:*:*:*:*:*:*
- cpe:2.3:o:emerson:deltav_distributed_control_system:-:*:*:*:*:*:*:*
More vulnerabilities in Emerson Deltav Workstation
- CVE-2012-1817 — High (CVSS 7.5): Buffer overflow in Emerson DeltaV and DeltaV Workstations 9.3.1, 10.3.1, 11.3, and 11.3.1 and DeltaV ProEssentials…
- CVE-2012-1815 — High (CVSS 7.5): SQL injection vulnerability in Emerson DeltaV and DeltaV Workstations 9.3.1, 10.3.1, 11.3, and 11.3.1 and DeltaV…
- CVE-2012-1818 — Medium (CVSS 6.4): An unspecified ActiveX control in Emerson DeltaV and DeltaV Workstations 9.3.1, 10.3.1, 11.3, and 11.3.1 and DeltaV…
- CVE-2012-1816 — Medium (CVSS 5.0): PORTSERV.exe in Emerson DeltaV and DeltaV Workstations 9.3.1, 10.3.1, 11.3, and 11.3.1 and DeltaV ProEssentials…
- CVE-2012-1814 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in Emerson DeltaV and DeltaV Workstations 9.3.1, 10.3.1, 11.3, and 11.3.1 and…
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