THREATPORT/VULNERABILITY/CVE-2018-8555
HIGH SEVERITY

CVE-2018-8555

Chakracore vulnerability

CVSS
7.5
EPSS
14.2%
EPSS pct
96th
Exploited
No known
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-2018-8541, CVE-2018-8542, CVE-2018-8543, CVE-2018-8551, CVE-2018-8556, CVE-2018-8557, CVE-2018-8588.
Affected vendor
Microsoft
Affected product
Chakracore
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2018-11-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 14.2% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2018-8555

  • Confirm whether Microsoft Chakracore is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-8555.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-8555

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-8555 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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