CVE-2021-21995 json
OpenSLP as used in ESXi has a denial-of-service vulnerability due a heap out-of-bounds read issue.
published 5y ago modified 4mo ago also EUVD-2021-9166
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- vmware cloud_foundation 3.10.2, 4.3
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0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- n/a VMware ESXi and VMware Cloud Foundation
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
- Technology feeds
References
-
vmware.com
/security/advisories/VMSA-2021-0014.html
vendor-advisory
Sources
- CVE List CVE-2021-21995
- NVD CVE-2021-21995
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