9.6

CVE-2021-21121: google chrome Use After Free

CVSS: 9.6v3.1CriticalModified
AliasesUBUNTU-CVE-2021-21121DEBIAN-CVE-2021-21121
Published 09-02-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-21121 is a critical (CVSS 9.6) Use After Free vulnerability in google chrome. EPSS estimates a 6.19% chance of exploitation in the next 30 days, higher than 93.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.6/10
010
Critical · v3.1 (NVD)
EPSS score
6.19%
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 10 · Related 8
DSA-4846-1MGASA-2021-0406OPENSUSE-SU-2021:0166-1OPENSUSE-SU-2021:0173-1OPENSUSE-SU-2021:0177-1OPENSUSE-SU-2021:0186-1

Timeline

  1. 09-02-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Use after free in Omnibox in Google Chrome on Linux prior to 88.0.4324.96 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

6.19%

Chance of exploitation in the next 30 days

Percentile

93%

Versus all other CVEs

30-day change

0.00 pp

From 6.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
6.19%

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< 88.0.4324.96-0.1
Google1 product
  • chrome≥ unspecified, < 88.0.4324.96 | < 88.0.4324.96
Microsoft1 product
Ubuntu1 product
  • chromium-browser< 89.0.4389.82-0ubuntu0.16.04.1 | < 89.0.4389.82-0ubuntu0.18.04.1

4 vendors · 4 products

References

6 links