CVE-2026-9942: google chrome Use of Uninitialized Variable
CVSS: 5.0v3.1MediumAnalyzed
AliasesDEBIAN-CVE-2026-9942CGA-gmh2-3x2j-3wp7CGA-xr5m-82rf-fw5w
Published 28-05-2026Last modified 29-05-2026
Vulnerability summary
CVE-2026-9942 is a medium (CVSS 5.0) Use of Uninitialized Variable vulnerability in google chrome. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.6% of scored vulnerabilities.
CVSS score
5.0/10
010
Medium · v3.1 (CVE.org)EPSS score
0.21%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 7 · Related 6Timeline
- 28-05-2026PublishedVulnerability first disclosed.
- 29-05-2026Last modifiedVulnerability information updated.
Description
Uninitialized Use in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)
CVSS metrics
3 scores · 3 sources · 1 versionMedium 5.0Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:LSourcesAll 3 agree
- OSV · DebianEcosystem advisory · calculated5.0MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
- NVDNIST5.0MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
EPSS trend
Probability
0.21%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
+0.01 pp
From 0.20% on 22-09-2026
22-09-202622-10-2026
EPSS score0.21%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian3 products
- chromium< 148.0.7778.215-1~deb12u1 | < 148.0.7778.215-1~deb13u1 | < 148.0.7778.215-1
- webkit2gtkAll versions (No fix recorded) | < 2.54.0-1~deb13u1
- wpewebkitAll versions (No fix recorded) | < 2.54.0-1
Chainguard1 product
- chromium< 149.0.7827.53-r0
Google1 product
- chrome≥ 148.0.7778.216, < 148.0.7778.216 | < 148.0.7778.216 | < 148.0.7778.215
Wolfi1 product
- chromium< 149.0.7827.53-r0
4 vendors · 6 products
References
3 links- chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.htmlRelease NotesVendor Advisory
- issues.chromium.org/issues/503438092Permissions Required