CVE-2018-8276

Edge vulnerability

CVSS

6.5

EPSS

5.3%

EPSS pct

92th

Exploited

No known

A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.

Affected vendor

Microsoft

Affected product

Edge

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Published

2018-07-11

Risk analysis

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

Its EPSS score of 5.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2018-8276

Confirm whether Microsoft Edge is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-8276.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-8276

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-8276 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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