CVE-2026-88831

Medium

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…

redhat·CWE-636·Published 2026-09-23

CVSS

5.3

EPSS

0.00

KEV

Exploits

cve.orgen

142 chars

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.

Version	Type	Source	Base	Exp	Impact	Vector
3.1	Primary	cve.org	5.3	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1	Primary	NVD	5.3	3.9	1.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1	Primary	cve.org	5.3	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1	Primary	cve.org	5.3	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1	Primary	cve.org	5.3	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1	Secondary	NVD	5.3	3.9	1.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1	Secondary	ENISA EUVD	5.3	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N