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CVE Record

CVE-2026-15816: Dracut: dracut: root code execution via unescaped error message written to sourced emergency hook script in die()

A flaw was found in dracut. The die() error-handling function writes its message into a shell script under the initramfs emergency-hook directory without properly shell-quoting it. When the message contains data derived from the DHCP ROOT_PATH option, an attacker on the adjacent network who controls a rogue DHCP server can inject a command-substitution sequence that executes as root the next time dracut sources its emergency hook scripts during standard boot-failure handling.

HighCVSS 7.5Not KEV-listedUpdated
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Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · medium confidence lookup

CWE-78: Command execution behavior lookup

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Execution behavior lookup

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Container behavior lookup

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CVE-2026-15816 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
5Timeline events
1ADP providers
31Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H1.65.9redhat

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2026-15816Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Reported to Red Hat.

  2. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Made public.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatRed Hat Enterprise Linux 10dracut, 0:107-9.el10_2affected
Red HatRed Hat Enterprise Linux 10.0 Extended Update Supportdracut, 0:105-4.el10_0.1affected
Red HatRed Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONdracut, 0:004-413.el6_10affected
Red HatRed Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONdracut, 0:004-414.el6_10affected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Supportdracut, 0:033-577.el7_9affected
Red HatRed Hat Enterprise Linux 8dracut, 0:049-246.git20260728.el8_10affected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportdracut, 0:049-138.git20220131.el8_4.1affected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Ondracut, 0:049-138.git20220131.el8_4.1affected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportdracut, 0:049-203.git20220511.el8_6.1affected
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Ondracut, 0:049-203.git20220511.el8_6.1affected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Servicedracut, 0:049-223.git20230119.el8_8.1affected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutionsdracut, 0:049-223.git20230119.el8_8.1affected
Red HatRed Hat Enterprise Linux 9dracut, 0:057-120.git20260728.el9_8affected
Red HatRed Hat Enterprise Linux 9dracut, 0:057-120.git20260728.el9_8affected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutionsdracut, 0:057-25.git20250717.el9_2.2affected
Red HatRed Hat Enterprise Linux 9.4 Update Services for SAP Solutionsdracut, 0:057-54.git20250423.el9_4.3affected
Red HatRed Hat Enterprise Linux 9.6 Extended Update Supportdracut, 0:057-89.git20250311.el9_6.1affected
Red HatRed Hat OpenShift Container Platform 4.13openshift/ose-rhel-coreos-9, 413.92.202609080414-0affected
Red HatRed Hat OpenShift Container Platform 4.14openshift/ose-rhel-coreos-9, 414.92.202609011250-0affected
Red HatRed Hat OpenShift Container Platform 4.15openshift/ose-rhel-coreos-9, 415.92.202609140326-0affected
Red HatRed Hat OpenShift Container Platform 4.16openshift/ose-rhel-coreos-9, 416.94.202609011112-0affected
Red HatRed Hat OpenShift Container Platform 4.17openshift/ose-rhel-coreos-9, 417.94.202609191027-0affected
Red HatRed Hat OpenShift Container Platform 4.18openshift/ose-rhel-coreos-9, 418.94.202609031320-0affected
Red HatRed Hat OpenShift Container Platform 4.18openshift/ose-rhel-coreos-9, 418.94.202609171815-0affected
Red HatRed Hat OpenShift Container Platform 4.19openshift/ose-rhel-coreos-9, 4.19.9.6.202609021231-0affected
Red HatRed Hat OpenShift Container Platform 4.20openshift/ose-rhel-coreos-9, 4.20.9.6.202608260604-0affected
Red HatRed Hat OpenShift Container Platform 4.21openshift/ose-rhel-coreos-9, 4.21.9.6.202609021100-0affected
Red HatRed Hat OpenShift Container Platform 4.22openshift/ose-rhel-coreos-9, 4.22.9.8.202608251819-0affected
Red HatRed Hat OpenShift Container Platform 4.22openshift/ose-rhel-coreos-9, 4.22.9.8.202609081748-0affected
Red HatRed Hat Hardened Imagesdracutunaffected
Weakness

CWE details

CWE-78

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-78 · source CWE mapping

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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