Vulnerability · Published Sep 23, 2026 · Assigned by redhat
CVE-2026-88835Busybox: busybox: dpkg read_package_field() steps past nul terminator, causing out-of-bounds read on malformed .deb packages
Medium 6.1
In plain English
A medium-severity out-of-bounds read 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 2% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.1%top 98.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
BusyBox dpkg read_package_field() steps past a NUL terminator on malformed .deb packages, causing an out-of-bounds heap read.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | busybox | no fix listed | DEBIAN-CVE-2026-88835 |
| Debian:13 | busybox | no fix listed | DEBIAN-CVE-2026-88835 |
| Debian:14 | busybox | no fix listed | DEBIAN-CVE-2026-88835 |
| Ubuntu:22.04:LTS | busybox | no fix listed | UBUNTU-CVE-2026-88835 |
| Ubuntu:24.04:LTS | busybox | no fix listed | UBUNTU-CVE-2026-88835 |
| Ubuntu:26.04:LTS | busybox | no fix listed | UBUNTU-CVE-2026-88835 |
| Ubuntu:26.10 | busybox | no fix listed | UBUNTU-CVE-2026-88835 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Hardened Images | see references |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References
- RHSA-2026:72111 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-88835 vdb-entry, x_refsource_REDHAT
- RHBZ#2531349 issue-tracking, x_refsource_REDHAT