7.6

CVE-2018-8355: microsoft chakracore Out-of-bounds Write

CVSS: 7.6v2.0HighModified
AliasesGHSA-h8jq-5737-hpcf
Published 15-08-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-8355 is a high (CVSS 7.6) Out-of-bounds Write vulnerability in microsoft chakracore. EPSS estimates a 68.24% chance of exploitation in the next 30 days, higher than 99.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
54/100
0100
High · default modelHow is this calculated?
CVSS score
7.6/10
010
High · v2.0 (NVD)
EPSS score
68.24%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1exploit-database

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 the scripting engine handles objects in memory in Microsoft browsers, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore, Internet Explorer 11, Microsoft Edge. This CVE ID is unique from CVE-2018-8353, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8373, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

68.24%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 68.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
68.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • exploit-databasedoswindowsVerified

    Microsoft Edge Chakra JIT - 'localeCompare' Type Confusion

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Microsoft5 products
  • chakracoreChakraCore | na
  • edgena
  • internet_explorerEOL11
  • internet explorer 11Windows 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 7 for 32-bit Systems Service Pack 1 | Windows 7 for x64-based Systems Service Pack 1 | Windows 8.1 for 32-bit systems | Windows 8.1 for x64-based systems | Windows RT 8.1 | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | Windows Server 2012 R2 | Windows Server 2016
  • 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 · 6 products

References

11 links
Show all 11 references