CVE-2026-12246
Out of bounds stack write with crafted APL RR
Description
NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes.
INFO
Published Date :
June 25, 2026, 5:24 a.m.
Last Modified :
June 25, 2026, 5:24 a.m.
Remotely Exploit :
No
Source :
NLnet Labs
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 206fc3a0-e175-490b-9eaa-a5738056c9f6 |
Solution
- Update NSD to a patched version.
- Apply vendor-supplied patches.
- Monitor system integrity after update.
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CVE-2026-12246 vulnerability anywhere in the article.