CVE-2026-19411

Local denial of service via null boot path

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL pointer dereference in shim on Red Hat Enterprise Linux 7, 8, and 9 allows local users to cause a denial of service. The is_removable_media_path() routine continues after DevicePathToStr() returns NULL and dereferences the missing boot-path pointer. Exploitation requires high local privileges and a difficult execution condition; the resulting bootloader failure can destabilize or crash the system and cause limited integrity impact.

CVSS severity3.9
Low
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in shim on Red Hat Enterprise Linux 7, 8, and 9 allows local users to cause a denial of service. The is_removable_media_path() routine continues after DevicePathToStr() returns NULL and dereferences the missing boot-path pointer. Exploitation requires high local privileges and a difficult execution condition; the resulting bootloader failure can destabilize or crash the system and cause limited integrity impact.

The record

CVE
CVE-2026-19411
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.9Red HatCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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