CVE-2026-42000

high

Published 2026-05-21 · Modified 2026-05-26

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

8.6

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.6

Description

Insufficient Validation of Names During AXFR

Predictions

Exploit likelihood

91%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
debian	bookworm	affected
debian	bullseye	affected
debian	forky	fixed	`5.0.5-1`
debian	sid	fixed	`5.0.5-1`
debian	trixie	fixed	`4.9.15-0+deb13u1`

Application impact

Vendor	Product	Versions	Fixed
powerdns	authoritative	`{"endExcluding":"4.9.15"}`	`4.9.15`

References

CWEs

CWE-77

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.