THREATPORT/VULNERABILITY/CVE-2018-8265
HIGH SEVERITY

CVE-2018-8265

Exchange Server vulnerability

CVSS
7.8
EPSS
19.6%
EPSS pct
97th
Exploited
No known
A remote code execution vulnerability exists in the way Microsoft Exchange software parses specially crafted email messages, aka "Microsoft Exchange Remote Code Execution Vulnerability." This affects Microsoft Exchange Server.
Affected vendor
Microsoft
Affected product
Exchange Server
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
Published
2018-10-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low 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 19.6% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2018-8265

  • Confirm whether Microsoft Exchange Server is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2018-8265.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-8265

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-8265 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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