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No exploitation reportedFix available

CVE-2016-8637

No exploitation reported by the sources we read.

  • Published2018-08-01
  • Fixed in045
  • WeaknessCWE-200 · CWE-732

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

A local information disclosure issue was found in dracut before 045 when generating initramfs images with world-readable permissions when 'early cpio' is used, such as when including microcode updates. Local attacker can use this to obtain sensitive information from these files, such as encryption keys or credentials.

Timeline

dates in UTC
  1. 2018-08-0113:29CVE publishedNVD

Versions per branch

NVD
Dracut project dracut
BranchAffectedFixed in
45.x< 045045

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

  • dracutUbuntu:Pro:22.04:LTSall versions · fixed in 051-1ubuntu0.1~esm1
  • dracutUbuntu:Pro:20.04:LTSall versions · fixed in 048+80-2ubuntu0.1~esm1
  • dracutUbuntu:Pro:18.04:LTSall versions · fixed in 047-2ubuntu0.1~esm1
  • dracutUbuntu:Pro:16.04:LTSall versions · fixed in 044+3-3ubuntu0.1~esm1
  • dracutUbuntu:26.04:LTSall versions · fixed in 110-11ubuntu0.1
  • dracutUbuntu:24.04:LTSall versions · fixed in 060+5-1ubuntu3.4
  • dracutSUSE:Linux Enterprise Server for SAP Applications 12 SP2all versions · fixed in 044-108.1
  • dracutSUSE:Linux Enterprise Server for SAP Applications 12 SP1all versions · fixed in 037-91.1

11 more package ranges on OSV.dev

Vendor advisories

  • CVE-2016-8637 Red Hat Product Security

    dracut: Local information disclosure of initramfs when early cpio is used

Full record on NVD

Fix

  1. Update Dracut project dracut to 045

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.05known since 2026-10-23
  • NVDCVSS 3.07.8read 2026-10-23
  • NVDCVSS 2.02.1read 2026-10-23
  • CNAweakness (CWE)CWE-732known since 2026-10-23
  • NVDweakness (CWE)CWE-200read 2026-10-23
  • FIRST EPSSEPSS score0.3 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2018-08-01
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-wf9g-696p-j466

Frequently asked questions

What is CVE-2016-8637?

A local information disclosure issue was found in dracut before 045 when generating initramfs images with world-readable permissions when 'early cpio' is used, such as when including microcode updates. Local attacker can use this to obtain sensitive information from these files, such as encryption keys or credentials.

Is CVE-2016-8637 actively exploited?

Active exploitation of CVE-2016-8637 has not been confirmed. Its EPSS score was 0.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-8637?

CVE-2016-8637 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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