Vulnerability · Published Sep 23, 2026 · Assigned by redhat
CVE-2026-88832Busybox: busybox: romfs volume id parsing performs unbounded memcpy into fixed-size label buffer, causing heap overflow
High 7.3
In plain English
A high-severity out-of-bounds write in Red Hat Hardened Images from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)0.1%top 97.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled metadata, causing a heap buffer overflow when processing crafted filesystem images.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | busybox | no fix listed | DEBIAN-CVE-2026-88832 |
| Debian:13 | busybox | no fix listed | DEBIAN-CVE-2026-88832 |
| Debian:14 | busybox | no fix listed | DEBIAN-CVE-2026-88832 |
| Ubuntu:22.04:LTS | busybox | no fix listed | UBUNTU-CVE-2026-88832 |
| Ubuntu:24.04:LTS | busybox | no fix listed | UBUNTU-CVE-2026-88832 |
| Ubuntu:26.04:LTS | busybox | no fix listed | UBUNTU-CVE-2026-88832 |
| Ubuntu:26.10 | busybox | no fix listed | UBUNTU-CVE-2026-88832 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Hardened Images | see references |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
References
- RHSA-2026:72111 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-88832 vdb-entry, x_refsource_REDHAT
- RHBZ#2531345 issue-tracking, x_refsource_REDHAT