CVE-2017-5949

Name: CVE-2017-5949
Creator: NVD / NIST
Published: 2017-04-03T05:59:00.77+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.82%

Last modified Jun 17, 2026

CVE-2017-5949 is a vulnerability of currently unknown severity. JavaScriptCore in WebKit, as distributed in Safari Technology Preview Release 22, allows remote attackers to cause a denial of service (heap-based out-of-bounds write and application crash) or possibly have unspecified other impact via crafted JavaScript code that triggers access to red-zone memory locations, related to jit/ThunkGenerators.cpp, llint/LowLevelInterpreter32_64.asm, and llint/LowLevelInterpreter64.asm.. EPSS estimates a 1.82% chance of exploitation in the next 30 days.

Description

JavaScriptCore in WebKit, as distributed in Safari Technology Preview Release 22, allows remote attackers to cause a denial of service (heap-based out-of-bounds write and application crash) or possibly have unspecified other impact via crafted JavaScript code that triggers access to red-zone memory locations, related to jit/ThunkGenerators.cpp, llint/LowLevelInterpreter32_64.asm, and llint/LowLevelInterpreter64.asm.

Metrics

EPSS Probability

1.82%

76.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Apple	Safari	22

References

http://www.securityfocus.com/bid/97298Third Party Advisory, VDB Entry
https://bugs.webkit.org/show_bug.cgi?id=167239Issue Tracking, Third Party Advisory
https://trac.webkit.org/changeset/211479Issue Tracking, Third Party Advisory
http://www.securityfocus.com/bid/97298Third Party Advisory, VDB Entry
https://bugs.webkit.org/show_bug.cgi?id=167239Issue Tracking, Third Party Advisory
https://trac.webkit.org/changeset/211479Issue Tracking, Third Party Advisory

Timeline

Published: Apr 3, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-5949?

How severe is CVE-2017-5949?

Severity scoring for CVE-2017-5949 is pending analysis. The EPSS model estimates a 1.82% probability of exploitation in the next 30 days.

How do I fix CVE-2017-5949?

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-2017-5949?

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

Scan your code now

Source: NVD / NIST