Vulnerability · Published Jul 30, 2026 · Assigned by Chrome
CVE-2026-17758
Critical 9.6
In plain English
A critical-severity heap buffer overflow 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 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.4%top 68.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Heap buffer overflow in Dawn in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | chromium | 151.0.7922.71-1~deb12u1 | DEBIAN-CVE-2026-17758 |
| Debian:13 | chromium | 151.0.7922.71-1~deb13u1 | DEBIAN-CVE-2026-17758 |
| Debian:14 | chromium | 151.0.7922.71-1 | DEBIAN-CVE-2026-17758 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H