ChakraCore and Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitra…

published 2017-10-13 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3406

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 69.2%; EPSS 69.2% chance of exploitation in 30 days, percentile 99.3%
public exploits: 1; Exploit-DB

ChakraCore and Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11792, CVE-2017-11793, CVE-2017-11796, CVE-2017-11797, CVE-2017-11798, CVE-2017-11799, CVE-2017-11800, CVE-2017-11801, CVE-2017-11804, CVE-2017-11805, CVE-2017-11806, CVE-2017-11807, CVE-2017-11808, CVE-2017-11809, CVE-2017-11810, CVE-2017-11811, CVE-2017-11812, and CVE-2017-11821.

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11802 advisory

Timeline

2017-10-13 Published
2017-10-17 First public exploit (EDB-43000)

Exploit prediction

69.16% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-43000 Microsoft Edge Chakra JIT - 'RegexHelper::StringReplace' Must Call the Callback Function with Updating ImplicitCallFlags dos, 2017-10-17

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	7.6	AV:N/AC:H/Au:N/C:C/I:C/A:C

Affected products

Microsoft Corporation ChakraCore, Microsoft Edge

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2017-11802
patch, vendor-advisory
exploit-db.com /exploits/43000/
exploit, third-party-advisory, vdb-entry
securitytracker.com /id/1039529
vdb-entry, third-party-advisory
securityfocus.com /bid/101130
vdb-entry, third-party-advisory

Sources

CVE List CVE-2017-11802
NVD CVE-2017-11802

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary