CVE-2016-4655KEV · OVERDUE

Apple iOS Information Disclosure Vulnerability

Medium · published August 25, 2016

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 98.4th percentile for exploit probability.

1591
days past CISA
deadline
CVSS v3.1
5.5
EPSS
33%
Percentile
98.4
In the wild
Confirmed
What it is

⚠️ A crafted app can pull sensitive info from your iOS device's memory! This vulnerability is like a sneaky magician revealing your secrets without you even noticing. 🎩✨ Imagine you’re at a restaurant, and a waiter who seems trustworthy serves you your meal, but then they casually read your private notes left on the table. This flaw in iOS lets an attacker access sensitive data in a similar way, exploiting trust to divulge what should remain private. If exploited, an attacker could obtain confidential information stored in your device's memory, potentially leading to identity theft or unauthorized access to sensitive accounts. While the stakes aren’t sky-high, it's definitely concerning; sensitive data shouldn’t be floating around like that!

Put simply

Imagine you’re at a restaurant, and a waiter who seems trustworthy serves you your meal, but then they casually read your private notes left on the table. This flaw in iOS lets an attacker access sensitive data in a similar way, exploiting trust to divulge what should remain private. The vulnerability arises from insufficient memory protection in the iOS kernel, allowing a malicious app to read memory it shouldn't have access to, therefore leaking sensitive information.

What to do

If exploited, an attacker could obtain confidential information stored in your device's memory, potentially leading to identity theft or unauthorized access to sensitive accounts. While the stakes aren’t sky-high, it's definitely concerning; sensitive data shouldn’t be floating around like that! To protect your device, update to at least iOS 9.3.5 or later immediately. Regularly check for updates to ensure you have the latest security patches installed. Keep an eye on app permissions and only install trusted apps from the App Store! You've got this! Stay secure and keep your device safe from sneaky exploits! 🛡️

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
0.33353 · 98.4th percentile
Published
2016-08-25T21:00Z
KEV added
2022-05-24 · due 2022-06-14
EPSS history
Timeline
  • 24 MAY 00:00Z
    Added to CISA KEV — remediate by Jun 14
    kev
  • 25 AUG 21:00Z
    The kernel in Apple iOS before 9.3.5 allows attackers to obtain sensitive information from memory via a crafted app
    cvelistv5