CVE-2016-5290

Memory safety bugs were reported in Firefox 49 and Firefox ESR 45.4

published June 11, 2018

CVSS
—
EPSS
3%
Percentile
88.0
In the wild
Unconfirmed
What it is

⚠️ Firefox and Thunderbird have some memory safety bugs that might be up to no good! 🐞 Think of it like a poorly organized library where books are misfiled — if the system isn’t careful, it might end up mixing up sensitive information or even lose some important titles altogether. If exploited, these memory safety bugs could lead to some serious issues, like giving attackers an open door to run arbitrary code on your system. While the risk isn't actively known to be exploited, leaving it unfixed could still lead to potentially disastrous results.

Put simply

Think of it like a poorly organized library where books are misfiled — if the system isn’t careful, it might end up mixing up sensitive information or even lose some important titles altogether. The memory safety flaws in Firefox versions 49 and earlier, as well as Thunderbird versions below 45.5, can potentially allow an attacker to manipulate memory in harmful ways, leading to arbitrary code execution under certain conditions.

What to do

If exploited, these memory safety bugs could lead to some serious issues, like giving attackers an open door to run arbitrary code on your system. While the risk isn't actively known to be exploited, leaving it unfixed could still lead to potentially disastrous results. Make sure to upgrade Firefox to version 50 or later and Thunderbird to version 45.5 or later to patch these vulnerabilities. Regularly check for updates and apply them promptly to keep your applications secure. You've got this! Stay vigilant, and keep your software updated! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03212 · 88.0th percentile
Published
2018-06-11T21:00Z
EPSS history
Timeline
  • 11 JUN 21:00Z
    Memory safety bugs were reported in Firefox 49 and Firefox ESR 45.4
    cvelistv5