Out-of-bounds write in Google Chrome
Priority MEDIUM 44CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
Heap buffer overflow in SwiftShader in Google Chrome prior to 84.0.4147.135 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Why it matters now
EPSS 0.03291 88th percentileScored 2026-11-07
Fix Fixed Chrome (Google): 84.0.4147.135Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Chrome | before 84.0.4147.135 | 84.0.4147.135 | Patch available | CNA |
- Chrome VendorGoogle Affected before 84.0.4147.135 Fixed in 84.0.4147.135 Patch available CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* | before 84.0.4147.125 | Vulnerable | |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | openSUSE |
| cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* | 15.2 | Vulnerable | openSUSE |
- cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions before 84.0.4147.125 Vulnerable ·Google
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Versions 15.2 Vulnerable ·openSUSE
Remediation
- Fix · CNA Chrome (Google) Fixed in 84.0.4147.135
Red Hat 1 advisory
- RHSA-2020:3560 Released 2020-08-26 · Red Hat rating Importantchromium-browser security update
- Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser-84.0.4147.135-1.el6_10
- Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser-84.0.4147.135-1.el6_10
- Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser-84.0.4147.135-1.el6_10
- Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser-84.0.4147.135-1.el6_10
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Google Chrome — FEDORA-2020-6da740d38c
34 records Highest priority Priority MEDIUM 17 MEDIUM, 17 LOW
Other records, highest priority first
- TI-2020-05400 Use after free in Google ChromePriority MEDIUM 60
- TI-2020-05399 Use after free in Google ChromePriority MEDIUM 60
- TI-2020-05398 Use after free in Google ChromePriority MEDIUM 60
- Advisory ·
Google Chrome — openSUSE-SU-2020:1713
13 records Highest priority Priority MEDIUM 9 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2020-05422 Use after free in Google ChromePriority MEDIUM 45
- TI-2020-12575 Insufficient policy enforcement in extensions in Google Chrome prior to 85.0.4183.121…Priority MEDIUM 44
- TI-2020-12573 Insufficient policy validation in extensions in Google Chrome prior to 85.0.4183.121…Priority MEDIUM 44
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Desktop Supplementary (v. 6) | Fixed | RHSA-2020:3560 |
| Red Hat Enterprise Linux HPC Node Supplementary (v. 6) | Fixed | RHSA-2020:3560 |
| Red Hat Enterprise Linux Server Supplementary (v. 6) | Fixed | RHSA-2020:3560 |
| Red Hat Enterprise Linux Workstation Supplementary (v. 6) | Fixed | RHSA-2020:3560 |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-6556
- 2026-10-03 Alias added: GHSA-fffr-w5cq-wghr
References
More Google Chrome vulnerabilities
- TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
- TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
Sources
- CVE-2020-6556 · CVE Program
- CVE-2020-6556 · NVD
- FIRST EPSS
- GHSA-fffr-w5cq-wghr · GitHub Advisory Database · CC BY 4.0
- CVE-2020-6556 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences