CVE-2026-3909: Google Skia Out-of-Bounds Write Vulnerability

Q: How do I fix CVE-2026-3909?

chrome: upgrade to 146.0.7680.80. Exact commands for each OS are on this page.

Q: Is CVE-2026-3909 being exploited?

Yes. CVE-2026-3909 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

Q: What does CVE-2026-3909 affect?

CVE-2026-3909 affects chrome. Severity is high (CVSS 8.8). Out of bounds write in Skia in Google Chrome prior to 146.0.7680.75 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)

Q: How urgent is CVE-2026-3909?

Priority 77/100. High severity; Exploited in the wild (CISA KEV)

Patch now

HIGH 8.8EXPLOITEDUPGRADE

CVE-2026-3909 is a high-severity flaw (CVSS 8.8) affecting chrome, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Out of bounds write in Skia in Google Chrome prior to 146.0.7680.75 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)

Why this priority

High severity
Exploited in the wild (CISA KEV)

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	2.3% (top 16%)
CISA exploited list	Yes, fix due 2026-03-27
Weakness	CWE-787
Published	2026-03-13
Last modified	2026-06-17

Publisher (CNA): Chrome · Vendor: google

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-13Exploited Added to the CISA Known Exploited Vulnerabilities list
2026-03-13 19:55 UTCPublished CVE record published
2026-03-27Deadline CISA due date for US federal agencies to patch
2026-06-17 10:44 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 146.0.7680.80

Fixed in: 146.0.7680.80

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chrome || rpm -q chrome || chrome --version

2. UPGRADE to 146.0.7680.80 (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.

Exact fixes by distribution

Fedora ELN · gram_grep · FIXED · 0.10.4-1.eln159 · FEDORA-2026-0808475f2a · source

sudo dnf upgrade --advisory=FEDORA-2026-0808475f2a

Fedora 46 · wesnoth · FIXED · 1.19.29-1.fc46 · FEDORA-2026-58f458e24e · source

sudo dnf upgrade --advisory=FEDORA-2026-58f458e24e

Ubuntu 22.04 · chromium-browser · NOT AFFECTED

Ubuntu 24.04 · chromium-browser · NOT AFFECTED

Ubuntu 24.04 · webkit2gtk · DEFERRED

Debian 12 · chromium · FIXED · 146.0.7680.80-1~deb12u1

sudo apt update && sudo apt install --only-upgrade chromium dpkg --compare-versions "$(dpkg-query -W -f='${Version}' chromium)" ge "146.0.7680.80-1~deb12u1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · chromium · FIXED · 146.0.7680.80-1~deb13u1

sudo apt update && sudo apt install --only-upgrade chromium dpkg --compare-versions "$(dpkg-query -W -f='${Version}' chromium)" ge "146.0.7680.80-1~deb13u1" && echo PATCHED || echo STILL-VULNERABLE

Debian 12 · webkit2gtk · NO FIX YET

Debian 13 · webkit2gtk · FIXED · 2.54.0-1~deb13u1

sudo apt update && sudo apt install --only-upgrade webkit2gtk dpkg --compare-versions "$(dpkg-query -W -f='${Version}' webkit2gtk)" ge "2.54.0-1~deb13u1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 8 · webkit2gtk3 · FIXED · webkit2gtk3-2.54.0-1.el8_10

sudo dnf upgrade --advisory=RHSA-2026:74084 rpm -q webkit2gtk3

RHEL 9 · webkit2gtk3 · FIXED · webkit2gtk3-2.54.0-1.el9_8

sudo dnf upgrade --advisory=RHSA-2026:69098 rpm -q webkit2gtk3

RHEL 9.2 Update Services for SAP Solutions · webkit2gtk3 · FIXED · webkit2gtk3-2.54.0-1.el9_2

sudo dnf upgrade --advisory=RHSA-2026:89822 rpm -q webkit2gtk3

RHEL 9.6 Extended Update Support · webkit2gtk3 · FIXED · webkit2gtk3-2.54.0-1.el9_6

sudo dnf upgrade --advisory=RHSA-2026:89821 rpm -q webkit2gtk3

RHEL 10 · firefox · NOT AFFECTED

Alpine 3.23 · qt6-qtwebengine · FIXED · qt6-qtwebengine-6.10.1-r10

apk add --upgrade qt6-qtwebengine apk info -v qt6-qtwebengine

Alpine 3.24 · qt6-qtwebengine · FIXED · qt6-qtwebengine-6.10.2-r8

apk add --upgrade qt6-qtwebengine apk info -v qt6-qtwebengine

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: jaf0rk/CVE-2026-3909 (2 stars)

Verify at the official source NVD · CVE Program · CISA KEV catalog · 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.

Quick answers

How do I fix CVE-2026-3909?

chrome: upgrade to 146.0.7680.80. Exact commands for each OS are on this page.

Is CVE-2026-3909 being exploited?

Yes. CVE-2026-3909 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2026-3909 affect?

CVE-2026-3909 affects chrome. Severity is high (CVSS 8.8). Out of bounds write in Skia in Google Chrome prior to 146.0.7680.75 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)

How urgent is CVE-2026-3909?

Priority 77/100. High severity; Exploited in the wild (CISA KEV)

Software pages

Google Chrome vulnerabilities · Chromium vulnerabilities

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References

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