CVE-2021-21995

high-risk
Published 2021-07-13

OpenSLP as used in ESXi has a denial-of-service vulnerability due a heap out-of-bounds read issue. A malicious actor with network access to port 427 on ESXi may be able to trigger a heap out-of-bounds read in OpenSLP service resulting in a denial-of-service condition.

Do I need to act?

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0.47% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Vmware

References (2)

Vendor Advisory https://www.vmware.com/security/advisories/VMSA-2021-0014.html
Vendor Advisory https://www.vmware.com/security/advisories/VMSA-2021-0014.html
61
/ 100
high-risk
Severity 26/34 · High
Exploitability 2/34 · Minimal
Exposure 33/34 · Critical