Microsoft Site Server and Commercial Internet System (MCIS) do not set an expiration for…
Priority LOW 32Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Microsoft Site Server and Commercial Internet System (MCIS) do not set an expiration for a cookie, which could then be cached by a proxy and inadvertently used by a different user.
Why it matters now
EPSS 0.05777 93rd 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:commercial_internet_system:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:commercial_internet_system:2.5:*:*:*:*:*:*:* | 2.5 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:site_server:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:site_server_commerce:3.0:alpha:*:*:*:*:*:* | 3.0 alpha | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:commercial_internet_system:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:commercial_internet_system:2.5:*:*:*:*:*:*:* Versions 2.5 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:site_server:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:site_server_commerce:3.0:alpha:*:*:*:*:*:* Versions 3.0 alpha Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-1999-0910
- 2026-10-03 Alias added: GHSA-mpf6-hxp8-4wqx
References
Advisory 1
More Microsoft Commercial Internet System vulnerabilities
- TI-2000-00246 IIS 4.0 and 5.0 does not properly perform ISAPI extension processing if a virtual… CVSS 2.0MEDIUM 5.0
- TI-2000-00053 Microsoft Commercial Internet System (MCIS) IMAP server allows remote attackers to cause… CVSS 2.0HIGH 7.5
- TI-1999-00727 IIS FTP servers may allow a remote attacker to read or delete files on the server, even… CVSS 2.0HIGH 7.5
- TI-1999-00817 Denial of service in IIS 4.0 via a flood of HTTP requests with malformed headers. CVSS 2.0MEDIUM 5.0
- TI-1999-00811 Race condition in the SSL ISAPI filter in IIS and other servers may leak information in plaintext. CVSS 2.0LOW 2.6
Sources
- CVE-1999-0910 · CVE Program
- CVE-1999-0910 · NVD
- FIRST EPSS
- GHSA-mpf6-hxp8-4wqx · GitHub Advisory Database · CC BY 4.0
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