VDB
DEBIAN-CVE-2026-3591
DEBIAN-CVE-2026-3591
PUBLISHED
CVSS 5.400000095367432 MEDIUM
A use-after-return vulnerability exists in the `named` server when handling DNS queries signed with SIG(0). Using a specially-crafted DNS request, an attacker may be able to cause an ACL to improperly (mis)match an IP address. In a default-allow ACL (denying only specific IP addresses), this may lead to unauthorized access. Default-deny ACLs should fail-secure. This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1. BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.
Risk Scores
CVSS 3.1
5.400000095367432
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | bind9 | *, *, 1:9.20.15-1 |
| Debian:13 | bind9 | 0, 1:9.20.11-4, 1:9.20.15-1 |
Timeline
- Mar 25, 2026 CVE Published
- Apr 28, 2026 CVE Updated