How severe is CVE-2018-17480?

CVE-2018-17480 has a CVSS 3.1 base score of 8.8 (HIGH). EPSS estimates a 35.6% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2018-17480: Google Chromium V8 Out-of-Bounds Write Vulnerability

CISA Known Exploited Vulnerabilities

Google Chromium V8 Out-of-Bounds Write Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-06-08

Remediation due

2022-06-22

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2018-17480

Description

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.

Severity

CVSS 3.1 · CISA8.8 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 14, 2026

All KEV statistics→

CISA added CVE-2018-17480 to the KEV catalog 1,275 days after its CVE record was published.
It is one of 75 Google entries in the CISA KEV catalog, and one of 21 added in 2022.
Its current EPSS score (35.6%) is higher than that of 44% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Google	Google Chrome	unspecified to <71.0.3578.80

References

6 Links

Vendor advisories

Vulnerability databases

106084

Other references

Record Details

Published

2018-12-11

Last updated

2025-10-21

Assigner (CNA)

Chrome

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.