Vulnerability · Published May 28, 2026 · Assigned by Chrome
CVE-2026-9973
High 8.8
In plain English
A high-severity out-of-bounds write in Chrome from Google. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.3%top 75.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Out of bounds write in V8 in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 148.0.7778.215-1~deb12u1 | DEBIAN-CVE-2026-9973 |
| Debian:13 | chromium | 148.0.7778.215-1~deb13u1 | DEBIAN-CVE-2026-9973 |
| Debian:14 | chromium | 148.0.7778.215-1 | DEBIAN-CVE-2026-9973 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H