CVE-2026-42000 · cross-distro fix matrix

CVE-2026-42000: Insufficient Validation of Names During AXFR

Affects 2 Linux releases across 2 (distro × package) combinations. First disclosed: 2026-05-21.

CVSS v3:MEDIUM · 6.8(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-42000 has a known fix. Run the listed command on that distro to remediate.

Debian trixie

Source: Debian Security Tracker

pdns→ fixed in4.9.15-0+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y pdns
```

Alpine edge

Source: Alpine secdb

pdns→ fixed in5.0.5-r0
```
apk update && apk add --upgrade pdns
```

Are YOU affected by CVE-2026-42000?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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