Insufficient validation of untrusted input in Updater in Google Chrome on Windows prior to 148.0.7778.96 allowed a local attacker to perfor…

published 2026-05-06 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-28083

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits: 0; none known

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)

Patch / fix

fixed in 1 distros 2

google chrome 148.0.7778.96

debian opensuse

chromium Debian 12 148.0.7778.96-1~deb12u1
chromium Debian 13 148.0.7778.96-1~deb13u1
chromium Debian 14 148.0.7778.96-1

debian advisories DEBIAN-CVE-2026-7990

chromium openSUSE Leap 16.0 148.0.7778.215-bp160.1.1
chromium openSUSE Tumbleweed 148.0.7778.167-1.1

opensuse advisories openSUSE-SU-2026:20849-1 openSUSE-SU-2026:10778-1

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-2026-7990 updated 2026-06-28 cvss 8.8

chromium-browser: Insufficient validation of untrusted input in Updater

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

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 6 mo ago (2026-05-06)

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Google Chrome

Classification

Weakness

CWE-20 Improper Input Validation

Technology feeds

Google Chrome rss critical rss

References

chromereleases.googleblog.com /2026/05/stable-channel-update-for-desktop.html
vendor-advisory
issues.chromium.org /issues/498892267
issue-tracking, permissions-required

Sources

CVE List CVE-2026-7990
NVD CVE-2026-7990

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.

Summary