What is CVE-2018-18356?

CVE-2018-18356 is a high-severity vulnerability in Google Chrome, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2018-12-11.

How severe is CVE-2018-18356?

High severity. CVSS v3 base score is 8.8 out of 10.

Use After Free in Google Chrome

CVE-2018-18356

An integer overflow in path handling lead to a use after free in Skia in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Vulnerability class: Integer Overflow

Published 2018-12-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.033 (88.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000

Affected products

Google Chrome — versions unspecified
Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
Debian Linux — versions 8.0, 9.0
openSUSE Leap — versions 15.0
Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
Red Hat Enterprise Linux Server — versions 6.0, 7.0
Red Hat Enterprise Linux Server Aus — versions 7.6
Red Hat Enterprise Linux Server Eus — versions 7.6
Red Hat Enterprise Linux Server Tus — versions 7.6
Red Hat Enterprise Linux Workstation — versions 6.0, 7.0

Weakness classification (CWE)

References

access.redhat.com/errata/RHSA-2019:0373 (vendor-advisory)
usn.ubuntu.com/3897-1/ (vendor-advisory)
crbug.com/883666
lists.debian.org/debian-lts-announce/2019/02/msg00023.html (mailing-list)
security.gentoo.org/glsa/201903-04 (vendor-advisory)
usn.ubuntu.com/3896-1/ (vendor-advisory)
lists.debian.org/debian-lts-announce/2019/02/msg00024.html (mailing-list)
chromereleases.googleblog.com/2018/12/stable-channel-update-for-desktop.html
access.redhat.com/errata/RHSA-2019:0374 (vendor-advisory)
www.debian.org/security/2019/dsa-4391 (vendor-advisory)

Frequently asked questions

What is CVE-2018-18356?: CVE-2018-18356 is a high-severity vulnerability in Google Chrome, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2018-12-11.
How severe is CVE-2018-18356?: High severity. CVSS v3 base score is 8.8 out of 10.