Name: CVE-2021-21974: Out-of-bounds Write
Creator: Rapid7
Published: 2021-02-24T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-21974, CWE-787, Rapid7 Critical, CVSS 8.8, EPSS 0.557

OpenSLP as used in ESXi (7.0 before ESXi70U1c-17325551, 6.7 before ESXi670-202102401-SG, 6.5 before ESXi650-202102101-SG) has a heap-overflow vulnerability. A malicious actor residing within the same network segment as ESXi who has access to port 427 may be able to trigger the heap-overflow issue in OpenSLP service resulting in remote code execution.

CVSS Details

CVSS 3.1 Base Score: 8.8
CVSS 3.1 Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Vmsa 2021 0002	—	Upgrade VMware ESXi 7.0.0 to build number 17325551Upgrade VMware ESXi 6.5 to build number 17477841Upgrade VMware ESXi 6.7 to build number 17499825	Feb 24, 2021	Feb 23, 2021

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CVSS Details

Covered by Rapid7

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