4.3

CVE-2026-9921: google chrome Use of Uninitialized Variable

Analyzed
AliasesDEBIAN-CVE-2026-9921CGA-g2r5-gmcg-4qhwCGA-xjmc-w5rw-wwhh
Published 28-05-2026Last modified 29-05-2026

Vulnerability summary

CVE-2026-9921 is a medium (CVSS 4.3) Use of Uninitialized Variable vulnerability in google chrome. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.6% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.28%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 3
OPENSUSE-SU-2026:10906-1OPENSUSE-SU-2026:20849-1CGA-3GH6-GR67-28WX

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 29-05-2026
    Last modifiedVulnerability information updated.

Description

Uninitialized Use in WebGL in Google Chrome on Android prior to 148.0.7778.216 allowed a remote attacker to leak cross-origin information via a crafted HTML page. (Chromium security severity: High)

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

Increase +0.04 pp

From 0.24% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard1 product
  • chromium< 149.0.7827.53-r0
Debian1 product
  • chromium< 148.0.7778.215-1~deb12u1 | < 148.0.7778.215-1~deb13u1 | < 148.0.7778.215-1
Google1 product
  • chrome≥ 148.0.7778.216, < 148.0.7778.216 | < 148.0.7778.216
Wolfi1 product
  • chromium< 149.0.7827.53-r0

4 vendors · 4 products

References

3 links