CVE-2021-21981
CVE-2021-21981 is a high-severity vulnerability in Broadcom Vmware Nsx-t Data Center with a CVSS 3.x base score of 7.8. 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-269.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 4.6
- EPSS exploit prediction: 0% (12th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-269
- Affected product: Broadcom Vmware Nsx-t Data Center
- Published:
- Last modified:
Description
VMware NSX-T contains a privilege escalation vulnerability due to an issue with RBAC (Role based access control) role assignment. Successful exploitation of this issue may allow attackers with local guest user account to assign privileges higher than their own permission level.
Frequently asked questions
- What is CVE-2021-21981?
- VMware NSX-T contains a privilege escalation vulnerability due to an issue with RBAC (Role based access control) role assignment. Successful exploitation of this issue may allow attackers with local guest user account to assign privileges higher than their own permission level.
- How severe is CVE-2021-21981?
- CVE-2021-21981 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-21981 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-21981?
- CVE-2021-21981 affects Broadcom Vmware Nsx-t Data Center. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-21981?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-21981 published?
- CVE-2021-21981 was published on 2021-04-19 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:broadcom:vmware_nsx-t_data_center:3.1.1:*:*:*:*:*:*:*
More vulnerabilities in Broadcom Vmware Nsx-t Data Center
- CVE-2023-20868 — Medium (CVSS 6.1): NSX-T contains a reflected cross-site scripting vulnerability due to a lack of input validation. A remote attacker can…
- CVE-2020-3993 — Medium (CVSS 5.9): VMware NSX-T (3.x before 3.0.2, 2.5.x before 2.5.2.2.0) contains a security vulnerability that exists in the way it…
All CVEs affecting Broadcom Vmware Nsx-t Data Center →
Other CWE-269 (Improper Privilege Management) vulnerabilities
- CVE-2026-31852 — Critical (CVSS 10.0): Jellyfin is an open-source media system. The code-quality.yml GitHub Actions workflow in jellyfin/jellyfin-ios is…
- CVE-2025-20282 — Critical (CVSS 10.0): A vulnerability in an internal API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to…
- CVE-2025-0505 — Critical (CVSS 10.0): On Arista CloudVision systems (virtual or physical on-premise deployments), Zero Touch Provisioning can be used to gain…
- CVE-2023-48418 — Critical (CVSS 10.0): In checkDebuggingDisallowed of DeviceVersionFragment.java, there is a possible way to access adb before SUW…
- CVE-2023-48419 — Critical (CVSS 10.0): An attacker in the wifi vicinity of a target Google Home can spy on the victim, resulting in Elevation of Privilege
- CVE-2023-31273 — Critical (CVSS 10.0): Protection mechanism failure in some Intel DCM software before version 5.2 may allow an unauthenticated user to…
Browse all CWE-269 (Improper Privilege Management) vulnerabilities →