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Fencer Vulns
high 7.5

CVE-2017-8640 in the critical feed json

Microsoft Edge in Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of…

published 2017-08-08 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-17589

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
69.3%
EPSS 69.3% chance of exploitation in 30 days, percentile 99.3%
public exploits
1
Exploit-DB

Summary

Microsoft Edge in 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 the way that Microsoft browser JavaScript engines render content when handling objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8634, CVE-2017-8635, CVE-2017-8636, CVE-2017-8638, CVE-2017-8639, CVE-2017-8641, CVE-2017-8645, CVE-2017-8646, CVE-2017-8647, CVE-2017-8655, CVE-2017-8656, CVE-2017-8657, CVE-2017-8670, CVE-2017-8671, CVE-2017-8672, and CVE-2017-8674.

Patch / fix

Timeline

  1. Published
  2. First public exploit (EDB-42476)

Exploit prediction

69.28% 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-42476 Microsoft Edge Chakra - Uninitialized Arguments (1) dos, 2017-08-17

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 Microsoft Scripting Engine

Classification

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

References

Sources

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.