CVE-2026-124743
Busybox: divide-by-zero and heap over-read in the volume_id hfs+ prober
Description
A flaw was found in BusyBox. When processing filesystem metadata, the volume identification component does not properly validate header values in HFS+ filesystems. An attacker able to attach a storage device or supply a specially crafted filesystem image can trigger an application crash, resulting in a Denial of Service (DoS) and preventing device resolution.
INFO
Published Date :
Nov. 11, 2026, 12:19 p.m.
Last Modified :
Nov. 11, 2026, 12:19 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-124743
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Apply the latest BusyBox security patches.
- Update BusyBox to a fixed version.
- Validate HFS+ filesystem metadata handling.
- Avoid processing untrusted HFS+ images.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-124743.
| URL | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-124743 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2571624 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-124743 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-124743
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-124743 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-124743 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Nov. 11, 2026
Action Type Old Value New Value Added Description A flaw was found in BusyBox. When processing filesystem metadata, the volume identification component does not properly validate header values in HFS+ filesystems. An attacker able to attach a storage device or supply a specially crafted filesystem image can trigger an application crash, resulting in a Denial of Service (DoS) and preventing device resolution. Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Added CWE CWE-369 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/124xxx/CVE-2026-124743.json">CVE-2026-124743</a> Added Reference https://access.redhat.com/security/cve/CVE-2026-124743 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2571624