Debian 13 — openntpd — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Debian 13 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2016-5117 Upstream summary: 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 […]