# CVE-2020-3992

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.

- Page: https://www.vulneraibility.com/cve/CVE-2020-3992
- CVSS: 9.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2022-05-03; known ransomware use
- EPSS: 83.02% (percentile 99.7)
- Unvetted proof-of-concept code on GitHub: 2 GitHub proofs of concept (first 2020-12-01)
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2021-08-19)
- Weakness: CWE-416
- Published: 2020-10-20

## Affected versions

- VMware ESXi: affected VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG)

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://www.vmware.com/security/advisories/VMSA-2020-0023.html
- [other] https://www.zerodayinitiative.com/advisories/ZDI-20-1377/
- [other] https://www.zerodayinitiative.com/advisories/ZDI-20-1385/
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3992

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.