CVE-2021-27018 json
The mechanism which performs certificate validation was discovered to have a flaw that resulted in certificates signed by an internal certi…
published 2021-08-30 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13791
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
The mechanism which performs certificate validation was discovered to have a flaw that resulted in certificates signed by an internal certificate authority to not be properly validated. This issue only affects clients that are configured to utilize Tenable.sc as the vulnerability data source.
Patch / fix
- puppet remediate 2.0.1
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
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:H/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- n/a Puppet Remediate
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
puppet.com
/security/cve/CVE-2021-27018
vendor-advisory
Sources
- CVE List CVE-2021-27018
- NVD CVE-2021-27018
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.