What is CVE-2020-3992?

CVE-2020-3992 is a vulnerability in Vmware Esxi. Published 2020-10-20.

Is CVE-2020-3992 known to be exploited?

Yes. CVE-2020-3992 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 24 public proof-of-concept repositories are indexed.

Vulnerability in Vmware Esxi

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 4…

EPSS: 0.903 (99.6th percentile) — read the EPSS interpretation.

Affected products

N/a Vmware Esxi — versions VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

www.vmware.com/security/advisories/VMSA-2020-0023.html (x_refsource_MISC)
www.zerodayinitiative.com/advisories/ZDI-20-1377/ (x_refsource_MISC)
www.zerodayinitiative.com/advisories/ZDI-20-1385/ (x_refsource_MISC)

Frequently asked questions

What is CVE-2020-3992?: CVE-2020-3992 is a vulnerability in Vmware Esxi. Published 2020-10-20.
Is CVE-2020-3992 known to be exploited?: Yes. CVE-2020-3992 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 24 public proof-of-concept repositories are indexed.