9.6

CVE-2021-21146: fedoraproject fedora Use After Free

CVSS: 9.6v3.1CriticalModified
AliasesUBUNTU-CVE-2021-21146DEBIAN-CVE-2021-21146
Published 09-02-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-21146 is a critical (CVSS 9.6) Use After Free vulnerability in fedoraproject fedora. EPSS estimates a 1.13% chance of exploitation in the next 30 days, higher than 65.8% 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
1.13%
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 8 · Related 6
DSA-4846-1MGASA-2021-0406OPENSUSE-SU-2021:0259-1OPENSUSE-SU-2021:0268-1OPENSUSE-SU-2021:0973-1OPENSUSE-SU-2021:1016-1

Timeline

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

Description

Use after free in Navigation in Google Chrome prior to 88.0.4324.146 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.13%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.13% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.13%

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< 88.0.4324.146-1
Fedoraproject1 product
Google1 product
  • chrome≥ unspecified, < 88.0.4324.146 | < 88.0.4324.146
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

8 links