CVE-2007-0427

Html Help Workshop vulnerability

CVSS

9.3

EPSS

31.0%

EPSS pct

98th

Exploited

No known

Stack-based buffer overflow in Microsoft Help Workshop 4.03.0002 allows user-assisted remote attackers to execute arbitrary code via a help project (.HPJ) file with a long HLP field in the OPTIONS section.

Affected vendor

Microsoft

Affected product

Html Help Workshop

CVSS vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Published

2007-01-23

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 31.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2007-0427

Confirm whether Microsoft Html Help Workshop is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2007-0427.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2007-0427

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2007-0427 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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