PatchTheCVECVE-2020-6449: Use after free in audio in Google Chrome prior to 80.0.3987.149 allowed a remote attacker to potentially explo
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HIGH 8.8WATCHLISTUPGRADEMITIGATEMITIGATE
CVE-2020-6449 is a high-severity flaw (CVSS 8.8) affecting chrome, debian linux, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Use after free in audio in Google Chrome prior to 80.0.3987.149 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Why this priority
- High severity
- Public exploit reference
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 2.7% (top 14%) |
| CISA exploited list | No |
| Weakness | CWE-416 |
| Published | 2020-03-23 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
google chrome UPGRADE
Affected: < 80.0.3987.149
Fixed in: 80.0.3987.149
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy chrome || rpm -q chrome || chrome --version
2. UPGRADE to 80.0.3987.149 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade chrome
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade chrome
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
debian debian linux MITIGATE
Affected: 9.0 · 10.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 9.0
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
fedoraproject fedora MITIGATE
Affected: 30 · 31 · 32
Fixed in: no fixed release known
Safe to downgrade to: a release before 30
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
opensuse backports sle DOWNGRADE
Affected: 15.0 sp1
Fixed in: no fixed release known
Safe to downgrade to: a release before 15.0
1. Check installed version
apt-cache policy backports-sle || rpm -q backports-sle || backports-sle --version
2. No fixed release: DOWNGRADE to a release before 15.0 (Debian / Ubuntu)
apt-cache madison backports-sle
sudo apt install backports-sle=<VERSION_BEFORE_15.0>
sudo apt-mark hold backports-sle
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list backports-sle
sudo dnf downgrade backports-sle-<VERSION_BEFORE_15.0>
sudo dnf versionlock add backports-sle
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
suse suse linux enterprise desktop MITIGATE
Affected: 12
Fixed in: no fixed release known
Safe to downgrade to: a release before 12
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
suse suse linux enterprise server MITIGATE
Affected: 12
Fixed in: no fixed release known
Safe to downgrade to: a release before 12
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-6449?
chrome: upgrade to 80.0.3987.149; debian linux: mitigate or apply the listed mitigation; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2020-6449 being exploited?
CVE-2020-6449 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-6449 affect?
CVE-2020-6449 affects chrome, debian linux, fedora. Severity is high (CVSS 8.8). Use after free in audio in Google Chrome prior to 80.0.3987.149 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
How urgent is CVE-2020-6449?
Priority 62/100. High severity; Public exploit reference; On your watchlist
Software pages
Debian vulnerabilities · Google Chrome vulnerabilities
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