The MHTML protocol handler in a component of Microsoft Outlook Express 5.5 SP2 and 6…
Priority MEDIUM 53CWE-264Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Complete · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-264.
Summary
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."
Why it matters now
EPSS 0.2663 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:outlook_express:5.5:sp2:*:*:*:*:*:* | 5.5 sp2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook_express:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:outlook_express:6.0:sp1:*:*:*:*:*:* | 6.0 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:windows_mail:*:*:*:*:*:*:*:* | all versions | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:outlook_express:5.5:sp2:*:*:*:*:*:* Versions 5.5 sp2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook_express:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:outlook_express:6.0:sp1:*:*:*:*:*:* Versions 6.0 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:windows_mail:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2008-1448
- 2026-10-03 Alias added: GHSA-8xj3-mf49-rfmm
References
More Microsoft Outlook Express vulnerabilities
- TI-2004-00347 The MHTML protocol handler in Microsoft Outlook Express 5.5 SP2 through Outlook Express 6… CVSS 2.0HIGH 10.0
- TI-2007-03777 Heap-based buffer overflow in Microsoft Outlook Express 6 and earlier, and Windows Mail… CVSS 2.0HIGH 9.3
- TI-2005-01149 Stack-based buffer overflow in the news reader for Microsoft Outlook Express (MSOE.DLL)… CVSS 2.0HIGH 7.5
- TI-2010-00777 Integer overflow in inetcomm.dll in Microsoft Outlook Express 5.5 SP2, 6, and 6 SP1… CVSS 2.0HIGH 9.3
- TI-2010-03008 Untrusted search path vulnerability in wab.exe 6.00.2900.5512 in Windows Address Book in… CVSS 2.0HIGH 9.3
- TI-2007-03910 Argument injection vulnerability involving Microsoft Outlook and Outlook Express, when… CVSS 3.1HIGH 8.8
Sources
- CVE-2008-1448 · CVE Program
- CVE-2008-1448 · NVD
- FIRST EPSS
- GHSA-8xj3-mf49-rfmm · GitHub Advisory Database · CC BY 4.0
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