How severe is CVE-2008-1448?

CVE-2008-1448 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2008-1448 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-1448?

CVE-2008-1448 primarily affects Microsoft Outlook Express. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-1448?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2008-1448 published?

CVE-2008-1448 was published on 2008-08-13 and last updated on 2026-06-16.

CVE-2008-1448

CVE-2008-1448 is a high-severity vulnerability in Microsoft Outlook Express with a CVSS 2.0 base score of 7.1. Its EPSS exploit-prediction score of 27% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 27% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft Outlook Express
Published: 2008-08-13
Last modified: 2026-06-16

Description

The MHTML protocol handler in a component of Microsoft Outlook Express 5.5 SP2 and 6 through SP1, and Windows Mail, does not assign the correct Internet Explorer Security Zone to UNC share pathnames, which allows remote attackers to bypass intended access restrictions and read arbitrary files via an mhtml: URI in conjunction with a redirection, aka "URL Parsing Cross-Domain Information Disclosure Vulnerability."

Frequently asked questions

What is CVE-2008-1448?: The MHTML protocol handler in a component of Microsoft Outlook Express 5.5 SP2 and 6 through SP1, and Windows Mail, does not assign the correct Internet Explorer Security Zone to UNC share pathnames, which allows remote attackers to bypass intended access restrictions and read arbitrary files via an mhtml: URI in conjunction with a redirection, aka "URL Parsing Cross-Domain Information Disclosure Vulnerability."
How severe is CVE-2008-1448?: CVE-2008-1448 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2008-1448 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-1448?: CVE-2008-1448 primarily affects Microsoft Outlook Express. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-1448?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2008-1448 published?: CVE-2008-1448 was published on 2008-08-13 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:microsoft:outlook_express:5.5:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook_express:6.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook_express:6.0:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_mail:*:*:*:*:*:*:*:*

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