CVE catalog
CVE-2016-5117
openntpd: CVE-2016-5117
- Severity
- Low
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.70% · Oct 25, 2026
OpenNTPD before 6.0p1 does not validate the CN for HTTPS constraint requests, which allows remote attackers to bypass the man-in-the-middle mitigations via a crafted timestamp constraint with a valid certificate.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | openntpd | sid | 1:7.9p1-5 | fixed |
| Debian | openntpd | forky | 1:7.9p1-5 | fixed |
| Debian | openntpd | trixie | 1:6.2p3-4.2 | fixed |
| Debian | openntpd | bookworm | 1:6.2p3-4.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | openntpd | source | sid | 1:6.0p1-1 | unimportant | Not reported | [825856] |
| Debian | openntpd | source | forky | 1:6.0p1-1 | unimportant | Not reported | [825856] |
| Debian | openntpd | source | trixie | 1:6.0p1-1 | unimportant | Not reported | [825856] |
| Debian | openntpd | source | bookworm | 1:6.0p1-1 | unimportant | Not reported | [825856] |