CVE-2018-5093

Name: CVE-2018-5093
Creator: NVD / NIST
Published: 2018-06-11T21:29:12.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 20.02%

Last modified Jun 17, 2026

CVE-2018-5093 is a vulnerability of currently unknown severity. A heap buffer overflow vulnerability may occur in WebAssembly during Memory/Table resizing, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 58.. EPSS estimates a 20.02% chance of exploitation in the next 30 days.

Description

A heap buffer overflow vulnerability may occur in WebAssembly during Memory/Table resizing, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 58.

Metrics

EPSS Probability

20.02%

97.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	<= 57.0.4
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10

References

http://www.securityfocus.com/bid/102786Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1415291Issue Tracking, Permissions Required
https://usn.ubuntu.com/3544-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory
http://www.securityfocus.com/bid/102786Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040270Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1415291Issue Tracking, Permissions Required
https://usn.ubuntu.com/3544-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-02/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2018-5093?

A heap buffer overflow vulnerability may occur in WebAssembly during Memory/Table resizing, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 58.

How severe is CVE-2018-5093?

Severity scoring for CVE-2018-5093 is pending analysis. The EPSS model estimates a 20.02% probability of exploitation in the next 30 days.

How do I fix CVE-2018-5093?

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-2018-5093?

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

Scan your code now

Source: NVD / NIST