CVE-2017-8545

Outlook vulnerability

CVSS

6.5

EPSS

5.0%

EPSS pct

91th

Exploited

No known

A spoofing vulnerability exists in when Microsoft Outlook for Mac does not sanitize html properly, aka "Microsoft Outlook for Mac Spoofing Vulnerability".

Affected vendor

Microsoft

Affected product

Outlook

CVSS vector

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

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2017-06-15

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 5.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2017-8545

Confirm whether Microsoft Outlook is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2017-8545.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-8545

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-8545 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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