CVE-2016-9686 json
The Puppet Communications Protocol (PCP) Broker incorrectly validates message header sizes.
published 2017-02-08 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10487
- cvss
- 5.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
The Puppet Communications Protocol (PCP) Broker incorrectly validates message header sizes. An attacker could use this to crash the PCP Broker, preventing commands from being sent to agents. This is resolved in Puppet Enterprise 2016.4.3 and 2016.5.2.
Patch / fix
- puppet puppet_enterprise 2016.4.3
Exploit prediction
1.27% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- Puppet Puppet Enterprise
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
puppet.com
/security/cve/cve-2016-9686
vendor-advisory
Sources
- CVE List CVE-2016-9686
- NVD CVE-2016-9686
Fencer Intel 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.