CVE-2026-3593
| Summary |
A use-after-free vulnerability exists within the DNS-over-HTTPS implementation.
This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1.
BIND 9 versions 9.18.0 through 9.18.48 and 9.18.11-S1 through 9.18.48-S1 are NOT affected.
|
| Publication Date |
May 20, 2026, 10:16 p.m. |
| Registration Date |
May 21, 2026, 4:09 a.m. |
| Last Update |
May 22, 2026, 12:24 a.m. |
|
CVSS3.1 : CRITICAL
|
| スコア |
9.8
|
| Vector |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
低 |
| 攻撃に必要な特権レベル(PR) |
不要 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
高 |
| 完全性への影響(I) |
高 |
| 可用性への影響(A) |
高 |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* |
9.20.0 |
|
|
9.20.23 |
| cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* |
9.21.0 |
|
|
9.21.22 |
Related information, measures and tools
Common Vulnerabilities List