CVE-2016-9066 · cross-distro fix matrix

CVE-2016-9066: A buffer overflow resulting in a potentially exploitable crash due to memory allocation issues when handling large amounts of incoming data. This vulnerability affects Thunderbird < 45.5, Firefox ESR < 45.5, and Firefox < 50.

Affects 3 Linux releases across 3 (distro × package) combinations.

Elevated exploitation risk

FIRST EPSS puts CVE-2016-9066's probability of exploitation in the next 30 days at 12% (96th percentile of all CVEs)— well above the noise floor. Prioritize it.

EPSS:12% · 30-day exploit probability96th percentile

Fix per ecosystem

Each block below is a distro release where CVE-2016-9066 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

firefox-esr→ fixed in45.5.0esr-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firefox-esr
```

Debian bookworm

Source: Debian Security Tracker

firefox-esr→ fixed in45.5.0esr-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firefox-esr
```

Debian trixie

Source: Debian Security Tracker

firefox-esr→ fixed in45.5.0esr-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firefox-esr
```

Are YOU affected by CVE-2016-9066?

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

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