8.8

CVE-2021-30555: google chrome Use After Free

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2021-30555DEBIAN-CVE-2021-30555
Published 02-07-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-30555 is a high (CVSS 8.8) Use After Free vulnerability in google chrome. EPSS estimates a 1.35% chance of exploitation in the next 30 days, higher than 71.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
1.35%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
OPENSUSE-SU-2021:0898-1OPENSUSE-SU-2021:0938-1OPENSUSE-SU-2021:0948-1OPENSUSE-SU-2021:0949-1OPENSUSE-SU-2022:0110-1OPENSUSE-SU-2024:10681-1

Timeline

  1. 02-07-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Use after free in Sharing in Google Chrome prior to 91.0.4472.114 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page and user gesture.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.35%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

0.00 pp

From 1.35% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.35%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • chromium< 93.0.4577.82-1
Google1 product
  • chrome≥ unspecified, < 91.0.4472.114 | < 91.0.4472.114
Ubuntu1 product
  • chromium-browser< 92.0.4515.159-0ubuntu0.18.04.1

3 vendors · 3 products

References

8 links