CVE-2016-3236

The Web Proxy Auto Discovery (WPAD) protocol implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1…

published June 16, 2016

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.5th percentile for exploit probability.

CVSS
—
EPSS
77%
Percentile
99.5
In the wild
Unconfirmed
What it is

⚠️ A misstep in the WPAD protocol could let attackers redirect your network traffic with a flick of their wrist! Think of it like a mailroom mishap where a clerk sends important packages to the wrong address simply because they were never double-checked. In this scenario, malicious actors can easily exploit the proxy discovery process and reroute your data without you even noticing. With this vulnerability, an attacker could hijack your network traffic—essentially eavesdropping on communications or injecting harmful content. While the impact isn't actively being exploited, the potential for data interception or manipulation is absolutely unnerving!

Put simply

Think of it like a mailroom mishap where a clerk sends important packages to the wrong address simply because they were never double-checked. In this scenario, malicious actors can easily exploit the proxy discovery process and reroute your data without you even noticing. The WPAD protocol implementation in multiple versions of Microsoft Windows has a flaw that mishandles proxy settings, allowing remote attackers to influence traffic routing without proper authorization.

What to do

With this vulnerability, an attacker could hijack your network traffic—essentially eavesdropping on communications or injecting harmful content. While the impact isn't actively being exploited, the potential for data interception or manipulation is absolutely unnerving! To protect your systems, ensure you’re operating on supported Windows versions and apply the latest security patches. Additionally, consider disabling WPAD if it's not essential, as minimizing unnecessary services is always a smart move! You've got this! Stay vigilant and secure your network like the superhero you are! 🦸‍♂️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.76770 · 99.5th percentile
Published
2016-06-16T01:00Z
EPSS history
Timeline
  • 16 JUN 01:00Z
    The Web Proxy Auto Discovery (WPAD) protocol implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1…
    cvelistv5