CVE-2017-5928

Name: CVE-2017-5928
Creator: NVD / NIST
Published: 2017-02-27T07:59:00.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.7/10EPSS 1.75%

Last modified Jun 17, 2026

CVE-2017-5928 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. The W3C High Resolution Time API, as implemented in various web browsers, does not consider that memory-reference times can be measured by a performance.now "Time to Tick" approach even with the https://bugzilla.mozilla.org/show_bug.cgi?id=1167489#c9 protection mechanism in place, which makes it easier for remote attackers to conduct AnC attacks via crafted JavaScript code.. EPSS estimates a 1.75% chance of exploitation in the next 30 days.

Description

The W3C High Resolution Time API, as implemented in various web browsers, does not consider that memory-reference times can be measured by a performance.now "Time to Tick" approach even with the https://bugzilla.mozilla.org/show_bug.cgi?id=1167489#c9 protection mechanism in place, which makes it easier for remote attackers to conduct AnC attacks via crafted JavaScript code.

Metrics

CVSS 3.1

3.7/10

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

EPSS Probability

1.75%

74.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
W3	High Resolution Time Api	All versions

References

http://www.cs.vu.nl/~herbertb/download/papers/anc_ndss17.pdfTechnical Description
http://www.securityfocus.com/bid/97036Third Party Advisory, VDB Entry
https://www.vusec.net/projects/ancThird Party Advisory
http://www.cs.vu.nl/~herbertb/download/papers/anc_ndss17.pdfTechnical Description
http://www.securityfocus.com/bid/97036Third Party Advisory, VDB Entry
https://www.vusec.net/projects/ancThird Party Advisory

Timeline

Published: Feb 27, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-5928?

How severe is CVE-2017-5928?

CVE-2017-5928 has a CVSS score of 3.7/10 (LOW severity). The EPSS model estimates a 1.75% probability of exploitation in the next 30 days.

How do I fix CVE-2017-5928?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2017

View all 2017CVEs →

Are you affected by CVE-2017-5928?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST