High severity · published Sep 23, 2026
CVE-2026-88832
Busybox: busybox: romfs volume id parsing performs unbounded memcpy into fixed-size label buffer, causing heap overflow
7.3
CVSS
0.1%
EPSS
No
On KEV
Description
BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled metadata, causing a heap buffer overflow when processing crafted filesystem images.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Hardened Images · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-88832
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-88832
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:72111
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-88832
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2531345
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