CVE-2017-11826KEV · OVERDUE

Microsoft Office Remote Code Execution Vulnerability

High · published October 13, 2017

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.8. It is confirmed in active exploitation. It sits in the 99.6th percentile for exploit probability.

1674
days past CISA
deadline
CVSS v3.1
7.8
EPSS
81%
Percentile
99.6
In the wild
Confirmed
What it is

🚨 A simple file opened in Microsoft Office could unleash chaos! Attackers can remotely execute code just by tricking the software into mishandling objects in memory. ⚡ Think of it like a waiter who doesn't check the ingredients before serving a dish — one rogue item could poison the whole meal. In this case, your Office apps could serve up a malicious code instead of a delightful document! The fallout? An attacker could gain complete control of your system, potentially accessing sensitive data, installing malicious software, or causing system failures. It’s a scenario that could lead to absolute mayhem in your digital workspace!

Put simply

Think of it like a waiter who doesn't check the ingredients before serving a dish — one rogue item could poison the whole meal. In this case, your Office apps could serve up a malicious code instead of a delightful document! This vulnerability allows remote code execution due to improper handling of objects in memory across several Microsoft Office products, including Office 2010 and 2013. An attacker can exploit this by sending specially crafted files that the software processes incorrectly.

What to do

The fallout? An attacker could gain complete control of your system, potentially accessing sensitive data, installing malicious software, or causing system failures. It’s a scenario that could lead to absolute mayhem in your digital workspace! To safeguard your systems, apply the latest security patches from Microsoft immediately. It's crucial to upgrade to the versions that address this vulnerability and ensure your software is up to date. Implementing strict file handling policies may also help mitigate risks. You've got this! Take these steps, and you'll be back in the security hero game in no time! 🛡️

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.81333 · 99.6th percentile
Published
2017-10-13T13:00Z
KEV added
2022-03-03 · due 2022-03-24
EPSS history
Timeline
  • 03 MAR 00:00Z
    Added to CISA KEV — remediate by Mar 24
    kev
  • 13 OCT 13:00Z
    Microsoft Office 2010, SharePoint Enterprise Server 2010, SharePoint Server 2010, Web Applications, Office Web Apps Server 2010 and 2013, Word Viewer, Word…
    cvelistv5