CVE-2026-7990: Insufficient validation of untrusted input in Updater in Google Chrome on Windows prior to 148.0.7778.96 allow

Q: How do I fix CVE-2026-7990?

chrome: upgrade to 148.0.7778.96. Exact commands for each OS are on this page.

Q: Is CVE-2026-7990 being exploited?

CVE-2026-7990 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-7990 affect?

CVE-2026-7990 affects chrome. Severity is high (CVSS 7.8). Insufficient validation of untrusted input in Updater in Google Chrome on Windows prior to 148.0.7778.96 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: Medium)

Routine

HIGH 7.8UPGRADE

CVE-2026-7990 is a high-severity flaw (CVSS 7.8) affecting chrome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insufficient validation of untrusted input in Updater in Google Chrome on Windows prior to 148.0.7778.96 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: Medium)

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-20
Published	2026-05-06
Last modified	2026-10-26

Publisher (CNA): Chrome · Vendor: google

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-06 19:16 UTCPublished CVE record published
2026-10-26 19:10 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 148.0.7778.96

Fixed in: 148.0.7778.96

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 148.0.7778.96 (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.

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.

Quick answers

How do I fix CVE-2026-7990?

chrome: upgrade to 148.0.7778.96. Exact commands for each OS are on this page.

Is CVE-2026-7990 being exploited?

CVE-2026-7990 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-2026-7990 affect?

CVE-2026-7990 affects chrome. Severity is high (CVSS 7.8). Insufficient validation of untrusted input in Updater in Google Chrome on Windows prior to 148.0.7778.96 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: Medium)

How urgent is CVE-2026-7990?

Priority 28/100. High severity

Software pages

Windows vulnerabilities · Google Chrome vulnerabilities · Chromium vulnerabilities

Related CVEs

CVE-2026-113076 HIGH 8.8 UPGRADE Use after free in Toolbar in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to e
CVE-2026-113077 MEDIUM 6.5 UPGRADE Memory corruption in Core in Google Chrome on on Mac prior to 156.0.8078.47 allowed a remote attacker to poten
CVE-2026-7898 HIGH 8.8 UPGRADE Use after free in Chromoting in Google Chrome on Linux prior to 148.0.7778.96 allowed a remote attacker to exe
CVE-2026-7951 HIGH 8.8 UPGRADE Out of bounds write in WebRTC in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to execute arb
CVE-2026-7992 HIGH 8.8 UPGRADE Insufficient validation of untrusted input in UI in Google Chrome on Linux, ChromeOS prior to 148.0.7778.96 al

References

← Back to latest CVEs