CVE-2017-7056

HIGH

Apple <10.3.3, <10.1.2, <6.2.2, <12.6.2 - RCE/DoS

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-7056. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC exploits a bug in JavaScriptCore's ArgumentsEliminationPhase where uninitialized values and incorrect length are exposed in the arguments object due to improper handling of the varargs limit condition. The exploit triggers the vulnerability through a loop and sleep mechanism to force the buggy state.

Description

An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. iCloud before 6.2.2 on Windows is affected. iTunes before 12.6.2 on Windows is affected. tvOS before 10.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · htmldosmultiple
https://www.exploit-db.com/exploits/42376

This PoC exploits a bug in JavaScriptCore's ArgumentsEliminationPhase where uninitialized values and incorrect length are exposed in the arguments object due to improper handling of the varargs limit condition. The exploit triggers the vulnerability through a loop and sleep mechanism to force the buggy state.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: WebKit JavaScriptCore (Safari)
No auth needed
Prerequisites: WebKit-based browser (e.g., Safari)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (8)

Core 8
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/99885
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT207927
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT207924
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT207928
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT207921
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT207923
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42376/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038950

Scores

CVSS v3 8.8
EPSS 0.0746
EPSS Percentile 92.0%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (6)
apple/icloud < 6.2.2
apple/iphone_os < 10.3.3
apple/itunes < 12.6.2
apple/safari < 10.1.2
apple/tvos < 10.2.2
apple/webkit
Published Jul 20, 2017
Tracked Since Feb 18, 2026