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CVE-2017-5928

13
FAUCET Score

CVE-2017-5928 describes a vulnerability in the W3C High Resolution Time API, present in various web browsers, that allows remote attackers to conduct AnC (Architectural Neutral Cache) attacks. This is achieved through crafted JavaScript, which can measure memory-reference times despite existing protection mechanisms. The vulnerability has a low CVSS score of 3.7, indicating low severity, and its attack vector is network-based with high attack complexity and a low impact on confidentiality. There is no evidence of active exploitation, no public exploit code available, and it has received minimal community discussion and media coverage, with one article mentioning its potential to break ASLR.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:w3:high_resolution_time_api:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0175 is in the 66th percentile among its peer group of 1,505 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

vusec.net / projects/anc
Third Party Advisory
cs.vu.nl / ~herbertb/download/papers/anc_ndss17.pdf
Technical Description
securityfocus.com / bid/97036
Third Party AdvisoryVDB Entry