CVE-2021-30983KEV Β· OVERDUE

Apple iOS and iPadOS Buffer Overflow Vulnerability

High Β· published August 24, 2021

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 87.0th percentile for exploit probability.

1560
days past CISA
deadline
CVSS v3.1
7.8
EPSS
3%
Percentile
87.0
In the wild
Confirmed
What it is

🚨 A single app can potentially hijack your entire system! This buffer overflow in iOS lets a rogue application execute arbitrary code with kernel privileges – like handing over your house keys to a stranger! πŸ”₯ Think of your device as an apartment with a lock that hasn't been updated. A clever intruder finds a way to jam the door open and waltzes in, taking control of everything inside while you sleep peacefully, none the wiser. πŸ’πŸ”‘ The consequences here are nothing short of catastrophic! An attacker could execute any code they wish, effectively turning your device into a puppet for malicious purposes. This poses a serious risk to your personal data and privacy, so stay alert! ⚑

Put simply

Think of your device as an apartment with a lock that hasn't been updated. A clever intruder finds a way to jam the door open and waltzes in, taking control of everything inside while you sleep peacefully, none the wiser. πŸ’πŸ”‘ This vulnerability arises from improper memory handling, leading to a buffer overflow that allows unauthorized code execution with kernel privileges. It's a big deal because it undermines the security model of the operating system itself.

What to do

The consequences here are nothing short of catastrophic! An attacker could execute any code they wish, effectively turning your device into a puppet for malicious purposes. This poses a serious risk to your personal data and privacy, so stay alert! ⚑ To protect yourself, update your iPhone or iPad to iOS 15.2 or iPadOS 15.2 immediately. This patch addresses the buffer overflow, ensuring your system is safe from potential attacks. Don’t wait – your digital fortress needs those upgrades! You've got this! Just update your device, and you'll be back to browsing the web safely in no time. πŸ›‘οΈ

The record
Technical detail
CVSS v3.1
7.8 Β· 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
0.02923 Β· 87.0th percentile
Published
2021-08-24T18:51Z
KEV added
2022-06-27 Β· due 2022-07-18
EPSS history
Timeline
  • 27 JUN 00:00Z
    Added to CISA KEV β€” remediate by Jul 18
    kev
  • 24 AUG 18:51Z
    A buffer overflow issue was addressed with improved memory handling
    cvelistv5