CVE-2018-12327
Stack-based buffer overflow in ntpq and ntpdc of NTP version 4.2.8p11 allows an attacker to achieve code execution or escalate to higher…
- 9.8CriticalCVSS base score
- 27.5%Exploitation in 30 daysEPSS · top 1.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Stack-based buffer overflow in ntpq and ntpdc of NTP version 4.2.8p11 allows an attacker to achieve code execution or escalate to higher privileges via a long string as the argument for an IPv4 or IPv6 command-line parameter. NOTE: It is unclear whether there are any common situations in which ntpq or ntpdc is used with a command line from an untrusted source.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- ntp 4.2.8p11 - Local Buffer Overflow (PoC) (Exploit-DB entry) (opens in a new tab)
EDB-ID 44909dos, linuxpublished 20 Jun 2018Not verified
References tagged exploit1 reference
- 44909 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 7 days later
· 7 days later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 27.5% · top 1.9% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
n/a
- affected n/a
References
References9
- RHSA-2018:3854 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://gist.github.com/fakhrizulkifli/9b58ed8e0354e8deee50b0eebd1c011f (opens in a new tab)x_refsource_MISCx_transferred
- 104517 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 44909 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- RHSA-2018:3853 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- GLSA-201903-15 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- RHSA-2019:2077 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-4229-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-4301 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-12327)Record last updated .