CVE-2017-5949

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-04-03 · updated 2026-06-17
Weakness: CWE-787

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.

Affected products

Apple Safari: 22

References

http://www.securityfocus.com/bid/97298
https://bugs.webkit.org/show_bug.cgi?id=167239
https://trac.webkit.org/changeset/211479
http://www.securityfocus.com/bid/97298
https://bugs.webkit.org/show_bug.cgi?id=167239
https://trac.webkit.org/changeset/211479

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