CVE-2016-7434
HIGHCVSS 7.5/10EPSS 52.94%
Last modified
CVE-2016-7434 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The read_mru_list function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (crash) via a crafted mrulist query.. EPSS estimates a 52.94% chance of exploitation in the next 30 days.
Description
The read_mru_list function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (crash) via a crafted mrulist query.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Ntp | Ntp | >= 4.3.0, < 4.3.94 | — |
| Ntp | Ntp | 4.2.7 | P100 |
| Ntp | Ntp | 4.2.8 | — |
| Hpe | Hpux-Ntp | >= b.11.31, < c.4.2.8.2.0 | — |
References
- http://nwtime.org/ntp428p9_release/Third Party Advisory
- http://support.ntp.org/bin/view/Main/NtpBug3082Issue Tracking, Mitigation, Vendor Advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_VulnerabilitiesRelease Notes, Vendor Advisory
- http://www.securityfocus.com/bid/94448Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037354Third Party Advisory, VDB Entry
- https://bto.bluecoat.com/security-advisory/sa139Third Party Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.ascThird Party Advisory
- https://www.exploit-db.com/exploits/40806/Exploit, Third Party Advisory, VDB Entry
- https://www.kb.cert.org/vuls/id/633847Third Party Advisory, US Government Resource
- http://nwtime.org/ntp428p9_release/Third Party Advisory
- http://support.ntp.org/bin/view/Main/NtpBug3082Issue Tracking, Mitigation, Vendor Advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_VulnerabilitiesRelease Notes, Vendor Advisory
- http://www.securityfocus.com/bid/94448Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037354Third Party Advisory, VDB Entry
- https://bto.bluecoat.com/security-advisory/sa139Third Party Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.ascThird Party Advisory
- https://www.exploit-db.com/exploits/40806/Exploit, Third Party Advisory, VDB Entry
- https://www.kb.cert.org/vuls/id/633847Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-7434?
The read_mru_list function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (crash) via a crafted mrulist query.
How severe is CVE-2016-7434?
CVE-2016-7434 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 52.94% probability of exploitation in the next 30 days.
How do I fix CVE-2016-7434?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2016-7434?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
