← Vulnerability feed

Vulnerability record · CVE-2015-7849 · published 7 August 2017

CVE-2015-7849: Ntp use after free vulnerability

Ntp · Ntp

Use-after-free vulnerability in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to possibly execute arbitrary code or cause a denial of service (crash) via crafted packets.

8.8 CVSS 3.1 High EPSS 17% · top 3.1% CWE-416 · Use after free
8.8CVSS 3.1 base score, v2 6.5
17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to possibly execute arbitrary code or cause a denial of service (crash) via crafted packets.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://support.ntp.org/bin/view/Main/NtpBug2916 PatchVendor Advisory
http://www.securityfocus.com/bid/77276 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1033951 Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1274257 Issue TrackingThird Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201607-15 Third Party AdvisoryVDB Entry
https://security.netapp.com/advisory/ntap-20171004-0001/ Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug2916 PatchVendor Advisory
http://www.securityfocus.com/bid/77276 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1033951 Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1274257 Issue TrackingThird Party AdvisoryVDB Entry
https://security.gentoo.org/glsa/201607-15 Third Party AdvisoryVDB Entry
https://security.netapp.com/advisory/ntap-20171004-0001/ Third Party Advisory

Track CVE-2015-7849 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2017-5638Apache Struts 2 Jakarta Multipart parser remote code executionThe Jakarta Multipart parser in Apache Struts 2 mishandles exceptions and error messages during file-upload attempts, letting a crafted Content-Type,…KEVEPSS 100%analysed9.8CVE-2016-3427Oracle Java SE JMX Improper Access Control VulnerabilityCVE-2016-3427 is an unspecified vulnerability in Oracle Java SE 6u113, 7u99, 8u77, Java SE Embedded 8u77, and JRockit R28.3.9, reached through vector…KEVEPSS 92%analysed9.0CVE-2021-40438Apache HTTP Server mod_proxy SSRF via crafted URI pathA crafted request URI path can make mod_proxy forward the request to an origin server chosen by the remote user, an SSRF flaw in Apache HTTP Server 2…KEVEPSS 100%analysed8.8CVE-2010-1871JBoss Seam 2 EL injection allows remote code executionJBoss Seam 2, as shipped in JBoss Enterprise Application Platform 4.3.0 for Red Hat Linux, fails to sanitize input used in JBoss Expression Language …KEVEPSS 83%analysed8.1CVE-2017-12617Apache Tomcat Default Servlet JSP upload leads to remote code executionApache Tomcat with HTTP PUT enabled (for example, the Default servlet readonly parameter set to false) allows an attacker to upload a JSP file throug…KEVEPSS 100%analysed8.1CVE-2017-12615Apache Tomcat on Windows unrestricted JSP upload via HTTP PUTApache Tomcat 7.0.0 through 7.0.79 on Windows with HTTP PUT enabled (for example, Default servlet readonly set to false) allows an attacker to upload…KEVEPSS 100%analysed8.1CVE-2017-9805Apache Struts REST Plugin XStream deserialization RCEThe REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an XStream instance for deseri…KEVEPSS 99%analysed7.8CVE-2019-0211Apache HTTP Server scoreboard use-after-free local privilege escalationApache HTTP Server 2.4.17 through 2.4.38 with MPM event, worker or prefork contains a use-after-free in scoreboard handling. Code running in a less-p…KEVEPSS 65%analysed

Source: NIST National Vulnerability Database (record CVE-2015-7849), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.