Widely-used Chrome PDF rendering vulnerability enabling remote code execution; could impact endpoints across organizations.
CVE-2026-6305
Heap overflow in PDFium enables remote code execution via crafted PDF in Chrome.
Is CVE-2026-6305 being exploited?
Not confirmed. CVE-2026-6305 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.34% probability of exploitation in the next 30 days.
How severe is CVE-2026-6305?
CVE-2026-6305 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-6305?
Yes. A fix has been recorded for CVE-2026-6305. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-6305 affect?
CVE-2026-6305 affects Google Chrome (before 147.0.7727.101), PDFium. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-6305?
Update Chrome to latest version (≥147.0.7727.101)
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution in Chrome sandbox via crafted PDF; attacker could take control of user device.
Immediate action required
- affected< 147.0.7727.101
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.