What is CVE-2018-17480?

CVE-2018-17480 is a high-severity vulnerability in Google Chrome, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2018-12-11.

How severe is CVE-2018-17480?

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

Is CVE-2018-17480 known to be exploited?

Yes. CVE-2018-17480 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.

Buffer overflow in Google Chrome

CVE-2018-17480

Execution of user supplied Javascript during array deserialization leading to an out of bounds write in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

Vulnerability class: Buffer Overflow

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

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.356 (98.4th percentile), scored 2026-10-18.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.356 · newest: 0.356 · change: 0.000

Affected products

Google Chrome — versions unspecified
Debian Linux — versions 9.0
Red Hat Enterprise Linux Desktop — versions 6.0
Red Hat Enterprise Linux Server — versions 6.0
Red Hat Enterprise Linux Workstation — versions 6.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-06-08. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-06-22.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

crbug.com/905940 (Exploit, Issue Tracking)
chromereleases.googleblog.com/2018/12/stable-channel-update-for-desktop.html (Vendor Advisory)
access.redhat.com/errata/RHSA-2018:3803 (vendor-advisory, Third Party Advisory)
www.debian.org/security/2018/dsa-4352 (vendor-advisory, Mailing List, Third Party Advisory)
www.securityfocus.com/bid/106084 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
security.gentoo.org/glsa/201908-18 (vendor-advisory, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2018-17480?: CVE-2018-17480 is a high-severity vulnerability in Google Chrome, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2018-12-11.
How severe is CVE-2018-17480?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2018-17480 known to be exploited?: Yes. CVE-2018-17480 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.