What is CVE-2011-1298?

CVE-2011-1298 is a high-severity vulnerability in Apple macOS, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2019-11-06.

How severe is CVE-2011-1298?

High severity. CVSS v3 base score is 7.5 out of 10.

Integer overflow in Apple macOS

CVE-2011-1298

An Integer Overflow exists in WebKit in Google Chrome before Blink M11 in the macOS WebCore::GraphicsContext::fillRect function.

Vulnerability class: Integer Overflow

Published 2019-11-06 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

bugs.chromium.org/p/chromium/issues/detail (Exploit, Mailing List, Vendor Advisory)
trac.webkit.org/changeset/80579 (Patch, Mailing List, Vendor Advisory)
trac.webkit.org/changeset/81431 (Patch, Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2011-1298?: CVE-2011-1298 is a high-severity vulnerability in Apple macOS, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2019-11-06.
How severe is CVE-2011-1298?: High severity. CVSS v3 base score is 7.5 out of 10.