CVE-2004-0502

Outlook vulnerability

CVSS

5.0

EPSS

20.2%

EPSS pct

97th

Exploited

No known

Outlook 2003, when replying to an e-mail message, stores certain files in a predictable location for the "src" of an img tag of the original message, which allows remote attackers to bypass zone restrictions and exploit other issues that rely on predictable locations, as demonstrated using a shell: URI.

Affected vendor

Microsoft

Affected product

Outlook

CVSS vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Published

2004-08-18

Risk analysis

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

Its EPSS score of 20.2% 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-2004-0502

Confirm whether Microsoft Outlook is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2004-0502.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2004-0502

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2004-0502 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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