CVE-2023-48426 | Chromecast Bootloader & Kernel-level code-execution including compromise of user-data

u-boot bug that allows for u-boot shell and interrupt over UART

Published: 2024-04-05 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-48426 is rated Moderate Risk (45.2/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.24%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-48426

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.11% 0.24% +0.13%
2 2025-03-30 0.22% 0.11% -0.11%
3 2025-03-29 — 0.22% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-48426

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 6.0 [email protected]

Weakness enumeration for CVE-2023-48426

OS Trackers for CVE-2023-48426

vendor priority summary link
ubuntu medium CVE-2023-48426 medium priority: Ubuntu including 2 source packages (u-boot, u-boot-nezha), 12 status rows across 7 suites (bionic, focal, jammy, mantic, noble, upstream, xenial): not-affected 9, needs-triage 2, DNE 1. https://ubuntu.com/security/CVE-2023-48426

Affected software / configurations for CVE-2023-48426

Vendor Product Version Raw CPE
google chromecast_firmware 5.0 cpe:2.3:o:google:chromecast_firmware:5.0:*:*:*:*:*:*:*

References for CVE-2023-48426

cvelogic Threat Intelligence