8.8

CVE-2021-4079: debian debian_linux Out-of-bounds Write

CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2021-4079DEBIAN-CVE-2021-4079
Published 23-12-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-4079 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in debian debian_linux. EPSS estimates a 0.88% chance of exploitation in the next 30 days, higher than 58.4% 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
0.88%
0%100%
Low · +0.04 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 6
DSA-5046-1MGASA-2021-0555MGASA-2022-0050OPENSUSE-SU-2021:1582-1OPENSUSE-SU-2021:1632-1OPENSUSE-SU-2022:0047-1

Timeline

  1. 23-12-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Out of bounds write in WebRTC in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via crafted WebRTC packets.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.88%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

+0.04 pp

From 0.85% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.88%

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

Debian2 products
Google1 product
  • chrome≥ unspecified, < 96.0.4664.93 | < 96.0.4664.93
Ubuntu1 product
  • chromium-browser< 97.0.4692.71-0ubuntu0.18.04.1

3 vendors · 4 products

References

7 links