No exploitation reportedFix available

CVE-2017-5121

Q: Is CVE-2017-5121 actively exploited?

Active exploitation of CVE-2017-5121 has not been confirmed. Its EPSS score was 5.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2017-5121?

CVE-2017-5121 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2017-10-27
WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Inappropriate use of JIT optimisation in V8 in Google Chrome prior to 61.0.3163.100 for Linux, Windows, and Mac allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page, related to the escape analysis phase.

Timeline

dates in UTC

2017-10-2705:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-5121?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-5121?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Debian debian linux

Branch	Affected	Fixed in	Source
9.0	= 9.0	no fix published	NVD
10.0	= 10.0	no fix published	NVD

Google chromeversion to verify

Branch	Affected	Fixed in	Source
61.0	< 61.0.3163.100	61.0.3163.100	NVD

Redhat enterprise linux desktop

Branch	Affected	Fixed in	Source
6.0	= 6.0	no fix published	NVD

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.18.8read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
NVDweakness (CWE)CWE-20read 2026-10-23
FIRST EPSSEPSS score5.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2017-10-27
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2017-5121?

Is CVE-2017-5121 actively exploited?

Active exploitation of CVE-2017-5121 has not been confirmed. Its EPSS score was 5.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-5121?

CVE-2017-5121 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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