CVE-2013-3896KEV · OVERDUE

Microsoft Silverlight Information Disclosure Vulnerability

Medium · published October 9, 2013

Patch now

The score understates this — it's already being exploited

CVSS calls it medium at 5.5. It is confirmed in active exploitation. It sits in the 99.3th percentile for exploit probability.

1591
days past CISA
deadline
CVSS v3.1
5.5
EPSS
68%
Percentile
99.3
In the wild
Confirmed
What it is

⚠️ Here's a sneaky little flaw in Microsoft Silverlight that could spill some sensitive information! This vulnerability lets attackers exploit unvalidated pointers, making it easier to access private data through a crafted Silverlight application. 🚨 Think of it as a restaurant where the waitstaff delivers your private order details to anyone who asks, without checking if they’re actually supposed to see it. That’s what happens here when the right checks aren’t in place! An attacker could craft a malicious Silverlight application to read sensitive information, potentially leading to unauthorized access to user data. This could expose personal or confidential information, making it a pretty big deal if it lands in the wrong hands!

Put simply

Think of it as a restaurant where the waitstaff delivers your private order details to anyone who asks, without checking if they’re actually supposed to see it. That’s what happens here when the right checks aren’t in place! The issue lies in Microsoft Silverlight 5 versions before 5.1.20913.0, where improper pointer validation during element access allows remote attackers to retrieve sensitive information via crafted applications.

What to do

An attacker could craft a malicious Silverlight application to read sensitive information, potentially leading to unauthorized access to user data. This could expose personal or confidential information, making it a pretty big deal if it lands in the wrong hands! To safeguard against this threat, update to Silverlight 5 version 5.1.20913.0 or later. Ensure that your applications validate inputs thoroughly to prevent similar vulnerabilities in the future. Regularly audit your systems for any outdated software! You've got this! By following these steps, you'll be one step closer to securing your systems. 🛡️

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.67959 · 99.3th percentile
Published
2013-10-09T14:44Z
KEV added
2022-05-25 · due 2022-06-15
EPSS history
Timeline
  • 25 MAY 00:00Z
    Added to CISA KEV — remediate by Jun 15
    kev
  • 09 OCT 14:44Z
    Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain…
    cvelistv5