3.9

CVE-2026-19411: shim NULL Pointer Dereference

CVSS: 3.9v3.1LowAwaiting analysis
AliasesUBUNTU-CVE-2026-19411DEBIAN-CVE-2026-19411
Published 10-08-2026Last modified 11-08-2026
Open JSON

Vulnerability summary

CVE-2026-19411 is a low (CVSS 3.9) NULL Pointer Dereference vulnerability in shim. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.5% of scored vulnerabilities.

Overall risk
16/100
0100
Low · default modelHow is this calculated?
CVSS score
3.9/10
010
Low · v3.1 (CVE.org)
EPSS score
0.13%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-08-2026
    PublishedVulnerability first disclosed.
  2. 11-08-2026
    Last modifiedVulnerability information updated.

Description

A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

+0.04 pp

From 0.10% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu3 products
  • secureboot-dbAll versions (No fix recorded)
  • shimAll versions (No fix recorded)
  • shim-signedAll versions (No fix recorded)
Debian1 product
  • shimAll versions (No fix recorded)

2 vendors · 4 products

References

5 links