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CVE-2026-12246

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ff65b592cb40a168ab76baef45155d8fc86f4e7c99e9d036fc948ed044f68cb9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-120","description":"CWE-120: Buffer Copy without Checking Size of Input","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:eaabd2e208a014dab7168e49f0cec806a2aef5ec1125b517e737d2bcca0fa790 · sha256:9d01a5516548faf7… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:eaabd2e208a014dab7168e49f0cec806a2aef5ec1125b517e737d2bcca0fa790 · sha256:9d01a5516548faf7… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"NSD","vendor":"NLnet Labs","versions":[{"lessThan":"4.14.3","status":"affected","version":"4.14.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:eaabd2e208a014dab7168e49f0cec806a2aef5ec1125b517e737d2bcca0fa790 · sha256:9d01a5516548faf7… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:eaabd2e208a014dab7168e49f0cec806a2aef5ec1125b517e737d2bcca0fa790 · sha256:9d01a5516548faf7… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-120","description":"CWE-120: Buffer Copy without Checking Size of Input","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:eaabd2e208a014dab7168e49f0cec806a2aef5ec1125b517e737d2bcca0fa790 · sha256:9d01a5516548faf7… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:eaabd2e208a014dab7168e49f0cec806a2aef5ec1125b517e737d2bcca0fa790 · sha256:9d01a5516548faf7… · /containers/cna/problemTypes/0/descriptions/1

Source references

1 source assertion
{"tags":["vendor-advisory"],"url":"https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-12246.txt"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:eaabd2e208a014dab7168e49f0cec806a2aef5ec1125b517e737d2bcca0fa790 · sha256:9d01a5516548faf7… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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