CVE-2026-12244
| Summary |
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes
|
| Publication Date |
June 25, 2026, 4:16 p.m. |
| Registration Date |
June 27, 2026, 4:25 a.m. |
| Last Update |
June 26, 2026, 11:07 a.m. |
|
CVSS3.1 : HIGH
|
| スコア |
8.8
|
| Vector |
CVSS:3.1/AV:N/AC:L/PR:L/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) |
低 |
| 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:nlnetlabs:nsd:*:*:*:*:*:*:*:* |
4.14.0 |
|
|
4.14.3 |
Related information, measures and tools
Common Vulnerabilities List