CVE-2021-25219 · cross-distro fix matrix

CVE-2021-25219: In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response pro

Affects 8 Linux releases across 8 (distro × package) combinations.

EPSS:8.0% · 30-day exploit probability94th percentile

Fix per ecosystem

Each block below is a distro release where CVE-2021-25219 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

bind9→ fixed in1:9.16.22-1~deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bind9
```

Debian bookworm

Source: Debian Security Tracker

bind9→ fixed in1:9.17.19-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bind9
```

Debian trixie

Source: Debian Security Tracker

bind9→ fixed in1:9.17.19-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bind9
```

Alpine v3.20

Source: Alpine secdb

bind→ fixed in9.16.22-r0
```
apk update && apk add --upgrade bind
```

Alpine v3.21

Source: Alpine secdb

bind→ fixed in9.16.22-r0
```
apk update && apk add --upgrade bind
```

Alpine edge

Source: Alpine secdb

bind→ fixed in9.16.22-r0
```
apk update && apk add --upgrade bind
```

Alpine v3.18

Source: Alpine secdb

bind→ fixed in9.16.22-r0
```
apk update && apk add --upgrade bind
```

Alpine v3.19

Source: Alpine secdb

bind→ fixed in9.16.22-r0
```
apk update && apk add --upgrade bind
```

Are YOU affected by CVE-2021-25219?

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.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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