CVE-2026-88831
Busybox: busybox: httpd silently fails open when ip deny rules contain invalid cidr prefix lengths
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
BusyBox httpd IP deny rules with invalid CIDR prefix lengths fail open, leaving a parsed IP with a zeroed mask so the rule matches no clients.
| CWE | CWE-636 |
| Vendor | red hat |
| Product | red hat hardened images |
| Published | Sep 23, 2026 |
| Last Updated | Sep 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
Red Hat / Red Hat Hardened Images
All versions affected