CVE-2017-0070

HIGH

Microsoft Edge - Remote Code Execution via Use-After-Free in Scripting Engine

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2017-0070. PoCs published by Google Security Research, qazbnm456, xbl3.

AI-analyzed exploit summary This exploit leverages a use-after-free (UAF) vulnerability in Microsoft Edge by manipulating JavaScript getters and JIT-compiled code. The PoC triggers undefined behavior by calling `__lookupGetter__` on the `defaultStatus` property within an iframe context, leading to potential remote code execution.

Description

A remote code execution vulnerability exists in the way affected Microsoft scripting engines render when handling objects in memory in Microsoft browsers. These vulnerabilities could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. This vulnerability is different from those described in CVE-2017-0010, CVE-2017-0015, CVE-2017-0032, CVE-2017-0035, CVE-2017-0067, CVE-2017-0071, CVE-2017-0094, CVE-2017-0131, CVE-2017-0132, CVE-2017-0133, CVE-2017-0134, CVE-2017-0136, CVE-2017-0137, CVE-2017-0138, CVE-2017-0141, CVE-2017-0150, and CVE-2017-0151.

Exploits (3)

exploitdb WORKING POC VERIFIED
by Google Security Research · htmldoswindows
https://www.exploit-db.com/exploits/41623

This exploit leverages a use-after-free (UAF) vulnerability in Microsoft Edge by manipulating JavaScript getters and JIT-compiled code. The PoC triggers undefined behavior by calling `__lookupGetter__` on the `defaultStatus` property within an iframe context, leading to potential remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Racy
Target: Microsoft Edge 38.14393.0.0
No auth needed
Prerequisites: Victim must visit a malicious webpage · Microsoft Edge 38.14393.0.0 must be in use
devstral-2 · analyzed Feb 16, 2026 Full analysis →
github WORKING POC 3,480 stars
by qazbnm456 · poc
https://github.com/qazbnm456/awesome-cve-poc/tree/master/CVE-2017-0070.md

This repository contains a functional proof-of-concept exploit for CVE-2017-0070, a use-after-free (UAF) vulnerability in Microsoft Edge. The exploit leverages undefined behavior in JavaScript getters to trigger a UAF condition, potentially leading to remote code execution (RCE).

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Racy
Target: Microsoft Edge 38.14393.0.0
No auth needed
Prerequisites: Microsoft Edge browser · Access to a malicious webpage
devstral-2 · analyzed Feb 27, 2026 Full analysis →
github WORKING POC 14 stars
by xbl3 · poc
https://github.com/xbl3/awesome-cve-poc_qazbnm456/tree/master/CVE-2017-0070.md

This repository contains a functional proof-of-concept exploit for CVE-2017-0070, a use-after-free (UAF) vulnerability in Microsoft Edge. The exploit leverages undefined behavior in JavaScript getters to trigger a UAF condition, potentially leading to remote code execution (RCE).

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Racy
Target: Microsoft Edge 38.14393.0.0
No auth needed
Prerequisites: Microsoft Edge browser · User interaction to trigger the exploit
devstral-2 · analyzed Feb 27, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/96690
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/41623/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038006

Scores

CVSS v3 7.5
EPSS 0.8547
EPSS Percentile 99.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (2)
microsoft/edge
Microsoft Corporation/Browser Browser
Published Mar 17, 2017
Tracked Since Feb 18, 2026