8.8

CVE-2021-21156: fedoraproject fedora Out-of-bounds Write

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2021-21156DEBIAN-CVE-2021-21156
Published 22-02-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-21156 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in fedoraproject fedora. EPSS estimates a 2.70% chance of exploitation in the next 30 days, higher than 85.7% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
2.70%
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 9 · Related 7
DSA-4858-1MGASA-2021-0406OPENSUSE-SU-2021:0392-1OPENSUSE-SU-2021:0401-1OPENSUSE-SU-2021:0413-1OPENSUSE-SU-2021:0973-1

Timeline

  1. 22-02-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.182 allowed a remote attacker to potentially exploit heap corruption via a crafted script.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.70%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.70% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.70%

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< 88.0.4324.182-1
Fedoraproject1 product
Google1 product
  • chrome≥ unspecified, < 88.0.4324.182 | < 88.0.4324.182
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

9 links