CVE-2017-7813

Name: CVE-2017-7813
Creator: NVD / NIST
Published: 2018-06-11T21:29:10.5+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.62%

Last modified Jun 17, 2026

CVE-2017-7813 is a vulnerability of currently unknown severity. Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. EPSS estimates a 1.62% chance of exploitation in the next 30 days.

Description

Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.

Metrics

EPSS Probability

1.62%

73.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	<= 55.0.3

References

http://www.securityfocus.com/bid/101057Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039465Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1383951Exploit, Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory
http://www.securityfocus.com/bid/101057Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039465Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1383951Exploit, Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7813?

How severe is CVE-2017-7813?

Severity scoring for CVE-2017-7813 is pending analysis. The EPSS model estimates a 1.62% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7813?

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.

Are you affected by CVE-2017-7813?

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

Scan your code now

Source: NVD / NIST