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Fencer Vulns
high 7.5

CVE-2021-30603 json

Data race in WebAudio in Google Chrome prior to 92.0.4515.159 allowed a remote attacker to potentially exploit heap corruption via a crafte…

published 2021-08-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17523

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Data race in WebAudio in Google Chrome prior to 92.0.4515.159 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Patch / fix

  • Google Chrome 92.0.4515.159
  • chromium Debian 14, Debian 13, Debian 12 93.0.4577.82-1

debian advisories DEBIAN-CVE-2021-30603

  • chromium-browser Ubuntu 18.04 LTS 92.0.4515.159-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2021-30603

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • chromium openSUSE Tumbleweed 93.0.4577.82-1.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1
  • opera openSUSE Leap 15.4 NonFree 85.0.4341.28-lp154.2.5.1
  • opera openSUSE Leap 15.3 NonFree, openSUSE Leap 15.2 NonFree 78.0.4093.184-lp153.2.15.1
  • chromium Package Hub 15 SP3, openSUSE Leap 15.3 92.0.4515.159-bp153.2.25.1
  • chromium openSUSE Leap 15.2 92.0.4515.159-lp152.2.122.1

opensuse advisories openSUSE-SU-2024:10681-1openSUSE-SU-2024:12948-1openSUSE-SU-2022:0110-1openSUSE-SU-2021:1221-1openSUSE-SU-2021:1180-1openSUSE-SU-2021:1172-1

  • chromium Alpine 3.24, Alpine 3.23, Alpine 3.22 +8 more 92.0.4515.159-r0
  • qt5-qtwebengine Alpine 3.14 5.15.3_git20211006-r0
  • qt5-qtwebengine Alpine 3.23, Alpine 3.22, Alpine 3.21 +6 more 5.15.3_git20210510-r6

alpine advisories ALPINE-CVE-2021-30603

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • chromium Arch Linux 92.0.4515.159-1
  • vivaldi Arch Linux 4.1.2369.21-1

arch linux advisories AVG-2298AVG-2299

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-30603 updated cvss 8.8

chromium-browser: Race in WebAudio

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.87% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • crbug.com https://crbug.com/1233564 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P

Affected products

  • Google Chrome

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.