🛡️ USN-8474-1 — nsd

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

NSD vulnerabilities

It was discovered that NSD incorrectly handled APL resource records with an

address length larger than permitted for the address family. A remote attacker

could use this to cause a stack-based buffer overflow when the zone is written

to disk, potentially executing arbitrary code with the privileges of the NSD

server. (CVE-2026-12246)

It was discovered that NSD incorrectly handled SVCB resource records. A remote

attacker could use this to cause a heap overflow, potentially executing

arbitrary code with the privileges of the NSD server. This issue only affected

Ubuntu 26.04 LTS. (CVE-2026-12244)

It was discovered that NSD had a use-after-free vulnerability in TLS

connection error logging. A remote attacker could use this to cause a denial

of service by crashing the server process. This issue only affected Ubuntu

26.04 LTS. (CVE-2026-12245)

It was discovered that NSD incorrectly handled TLS authentication for zone

transfers. An attacker could bypass transfer security restrictions when

certain conditions were met. This issue only affected Ubuntu 26.04 LTS.

(CVE-2026-12490)

Affected software

USN-8474-1 is recorded against 1 package.

  • nsd (fixed in 4.14.0-1ubuntu0.1~esm1)

Timeline and source

Published on 25 June 2026 and last revised on 29 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Advisory)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-25
Updated 2026-08-12
Modified 2026-06-29
Fix URL N/A

Affected Packages

Software From version Fixed in
nsd — 4.14.0-1ubuntu0.1~esm1

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