7.6

CVE-2018-8266: microsoft chakracore Out-of-bounds Write

CVSS: 7.6v2.0HighModified
AliasesGHSA-5wrx-85mr-7hrg
Published 15-08-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-8266 is a high (CVSS 7.6) Out-of-bounds Write vulnerability in microsoft chakracore. EPSS estimates a 28.68% chance of exploitation in the next 30 days, higher than 98.1% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.6/10
010
High · v2.0 (NVD)
EPSS score
28.68%
0%100%
High · +1.63 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-08-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2018-8380, CVE-2018-8381, CVE-2018-8384.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

28.68%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

+1.63 pp

From 27.05% on 20-09-2026

20-09-202620-10-2026
EPSS score
28.68%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft3 products
  • chakracoreChakraCore | ≤ 1.10.1
  • edgena
  • microsoft edgeWindows 10 for 32-bit Systems | Windows 10 for x64-based Systems | Windows 10 Version 1607 for 32-bit Systems | Windows 10 Version 1607 for x64-based Systems | Windows 10 Version 1703 for 32-bit Systems | Windows 10 Version 1703 for x64-based Systems | Windows 10 Version 1709 for 32-bit Systems | Windows 10 Version 1709 for x64-based Systems | Windows 10 Version 1803 for 32-bit Systems | Windows 10 Version 1803 for x64-based Systems | Windows Server 2016
NuGet1 product
  • Microsoft.ChakraCore< 1.10.2

2 vendors · 4 products

References

9 links