How severe is CVE-2018-17480?

CVE-2018-17480 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-17480 being actively exploited?

Yes. CVE-2018-17480 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-06-08, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2018-17480?

CVE-2018-17480 primarily affects Google Chrome. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-17480?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2018-17480 have an EU (EUVD) identifier?

Yes. CVE-2018-17480 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-9233. It is also flagged as exploited in the EUVD (since 2022-06-08).

When was CVE-2018-17480 published?

CVE-2018-17480 was published on 2018-12-11 and last updated on 2026-06-17.

CVE-2018-17480

CVE-2018-17480 is a high-severity vulnerability in Google Chrome with a CVSS 3.x base score of 8.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-06-08). The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 34% (98th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-06-08)
EU (EUVD) id: EUVD-2018-9233
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-06-08)
Weakness: CWE-787
Affected product: Google Chrome
Published: 2018-12-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2018-17480?: CVE-2018-17480 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-17480 being actively exploited?: Yes. CVE-2018-17480 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-06-08, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2018-17480?: CVE-2018-17480 primarily affects Google Chrome. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-17480?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2018-17480 have an EU (EUVD) identifier?: Yes. CVE-2018-17480 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-9233. It is also flagged as exploited in the EUVD (since 2022-06-08).
When was CVE-2018-17480 published?: CVE-2018-17480 was published on 2018-12-11 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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