What is CVE-2026-88832?

CVE-2026-88832 is a high-severity vulnerability in Red Hat Hardened Images, classified under Out-of-bounds Write. CVSS score: 7.3/10. Published 2026-09-23.

How severe is CVE-2026-88832?

High severity. CVSS v3 base score is 7.3 out of 10.

Buffer overflow in Red Hat Hardened Images

CVE-2026-88832

BusyBox romfs volume ID parsing uses unbounded strlen on attacker-controlled metadata, causing a heap buffer overflow when processing crafted filesystem images.

Vulnerability class: Buffer Overflow

Published 2026-09-23 · last modified 2026-09-25.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.7th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Red Hat Hardened Images

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

access.redhat.com/security/cve/CVE-2026-88832 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)
access.redhat.com/errata/RHSA-2026:72111 (vendor-advisory)

Frequently asked questions

What is CVE-2026-88832?: CVE-2026-88832 is a high-severity vulnerability in Red Hat Hardened Images, classified under Out-of-bounds Write. CVSS score: 7.3/10. Published 2026-09-23.
How severe is CVE-2026-88832?: High severity. CVSS v3 base score is 7.3 out of 10.