CVE-2021-21155

Heap buffer overflow in Tab Strip in Google Chrome on Windows prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to…

published February 22, 2021

CVSS
—
EPSS
1%
Percentile
70.7
In the wild
Unconfirmed
What it is

⚠️ A heap buffer overflow lurking in Google Chrome’s Tab Strip could let an attacker slip through the cracks! They simply need to craft an HTML page to potentially escape the sandbox. 😱 Think of this like a sneaky cat that finds a way to squeeze under a fence to escape the yard — if a malicious HTML page is the bait, the renderer process is the fence that could potentially be bypassed! If exploited, an attacker could escape the sandbox and gain access to sensitive information or execute arbitrary code, leaving your system vulnerable. While there's no known exploit yet, the potential for disaster is absolutely daunting!

Put simply

Think of this like a sneaky cat that finds a way to squeeze under a fence to escape the yard — if a malicious HTML page is the bait, the renderer process is the fence that could potentially be bypassed! This vulnerability occurs due to a heap buffer overflow in Google Chrome on Windows versions prior to 88.0.4324.182, allowing a compromised renderer process to escape the intended security boundaries.

What to do

If exploited, an attacker could escape the sandbox and gain access to sensitive information or execute arbitrary code, leaving your system vulnerable. While there's no known exploit yet, the potential for disaster is absolutely daunting! To protect yourself, update Google Chrome to version 88.0.4324.182 or later immediately. Regularly check for updates to ensure your browser remains secure! You've got this! Stay vigilant, keep your software updated, and you'll keep your browsing safe! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01324 · 70.7th percentile
Published
2021-02-22T21:20Z
EPSS history
Timeline
  • 22 FEB 21:20Z
    Heap buffer overflow in Tab Strip in Google Chrome on Windows prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to…
    cvelistv5