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Public proof of conceptFix available

CVE-2017-14955

A public proof of concept exists; no exploitation attested.

  • Published2017-10-02
  • WeaknessCWE-200 · CWE-362

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.

Timeline

dates in UTC
  1. 2017-10-0201:29CVE publishedNVD
  2. 2017-10-18Exploit-DB entryExploit-DB
  3. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Versions per branch

NVD
Checkmk
BranchAffectedFixed in
1.2= 1.2.3no fix published
1.2= 1.2.4no fix published
1.2= 1.2.5no fix published
1.2= 1.2.6no fix published
1.2= 1.2.7no fix published
1.2= 1.2.8no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • check-mkUbuntu:Pro:16.04:LTSall versions · fixed in 1.2.6p12-1ubuntu0.16.04.1+esm1
  • check-mkUbuntu:18.04:LTSall versions · fixed in 1.2.8p16-1ubuntu0.2

Full record on NVD

Fix

Advisories and patches

Detection

read 2026-11-04 22:56 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-43021
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.15.9read 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • NVDweakness (CWE)CWE-200, CWE-362read 2026-10-23
  • FIRST EPSSEPSS score12.1 %read 2026-11-04
  • Exploit-DBdetectionread 2026-11-04
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2017-10-02
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2017-14955?

Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.

Is CVE-2017-14955 actively exploited?

Active exploitation of CVE-2017-14955 has not been confirmed. Its EPSS score was 12.1% on 2026-11-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-14955?

CVE-2017-14955 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record