CVE-2020-3992 KEV
9.8
CRITICAL · CVSS 3.1 · EPSS 83% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2022-05-03.
Description
OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG) has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 83.02% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-416 |
| On CISA KEV | yes — remediate by 2022-05-03 |
| Public exploit | none known |
| Published | 2020-10-20 |
| Last modified | 2026-08-12 |
CISA KEV
| Name | VMware ESXi OpenSLP Use-After-Free Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2022-05-03 |
| Vendor / product | VMware / ESXi |
| Ransomware use | known |
Affected (2)
| Vendor | Product |
|---|---|
| vmware | cloud foundation |
| vmware | esxi |
References
- https://www.vmware.com/security/advisories/VMSA-2020-0023.html
- https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
- https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
- https://www.vmware.com/security/advisories/VMSA-2020-0023.html
- https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
- https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3992
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