Microsoft Exchange 5.5 Outlook Web Access HTML Redirection HTML injection

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Microsoft Exchange 5.5. This affects an unknown part of the component Outlook Web Access HTML Redirection Handler. Performing a manipulation results in HTML injection. This vulnerability was named CVE-2004-0203. The attack may be initiated remotely. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in Microsoft Exchange 5.5 (Groupware Software). This affects some unknown processing of the component Outlook Web Access HTML Redirection Handler. The manipulation with an unknown input leads to a html injection vulnerability. CWE is classifying the issue as CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in Outlook Web Access for Exchange Server 5.5 Service Pack 4 allows remote attackers to insert arbitrary script and spoof content in HTML email or web caches via an HTML redirect query.

The bug was discovered 08/10/2004. The weakness was presented 08/10/2004 by Amit Klein with Sanctum Inc. as MS04-026 as confirmed bulletin (Technet). It is possible to read the advisory at microsoft.com. This vulnerability is uniquely identified as CVE-2004-0203 since 03/11/2004. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 14254 (MS04-026: Vulnerability in Exchange Server 5.5 Outlook Web Access XSS (842436)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90162 (Microsoft Exchange Server 5.5 Outlook Web Access XSS and Spoofing Vulnerability (MS04-026)).

Applying the patch MS04-026 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 15964.

The vulnerability is also documented in the databases at X-Force (16583), Tenable (14254), SecurityFocus (BID 10902†), OSVDB (8407†) and Secunia (SA12261†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: HTML injection
CWE: CWE-80 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 14254
Nessus Name: MS04-026: Vulnerability in Exchange Server 5.5 Outlook Web Access XSS (842436)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14254
OpenVAS Name: Vulnerability in Exchange Server 5.5 Outlook Web Access XSS (842436)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: MS04-026

Snort ID: 15964
McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍

Timelineinfo

03/11/2004 🔍
08/10/2004 +152 days 🔍
08/10/2004 +0 days 🔍
08/10/2004 +0 days 🔍
08/10/2004 +0 days 🔍
08/10/2004 +0 days 🔍
08/10/2004 +0 days 🔍
08/10/2004 +0 days 🔍
08/10/2004 +0 days 🔍
08/11/2004 +0 days 🔍
08/11/2004 +0 days 🔍
11/23/2004 +104 days 🔍
07/13/2025 +7537 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS04-026
Researcher: Amit Klein
Organization: Sanctum Inc.
Status: Confirmed

CVE: CVE-2004-0203 (🔍)
GCVE (CVE): GCVE-0-2004-0203
GCVE (VulDB): GCVE-100-783

OVAL: 🔍

CERT: 🔍
X-Force: 16583 - Microsoft Exchange Server OWA could allow remote execution of code, High Risk
SecurityFocus: 10902 - Microsoft Exchange Outlook Web Access HTTP Response Splitting Vulnerability
Secunia: 12261 - Microsoft Exchange HTML Redirection Script Insertion Vulnerability, Moderately Critical
OSVDB: 8407 - Microsoft Exchange HTML Redirection Script Insertion
SecuriTeam: securiteam.com
Vulnerability Center: 5027 - [MS04-026] Microsoft Exchange Server 5.5 SP4 Outlook Web Access Cross Site Scripting and Spoofing At, Medium

Entryinfo

Created: 08/11/2004 11:30
Updated: 07/13/2025 13:13
Changes: 08/11/2004 11:30 (99), 06/29/2019 07:12 (3), 01/02/2025 12:47 (17), 07/13/2025 13:13 (2)
Complete: 🔍
Cache ID: 216:A2E:103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!