CVE-1999-0910

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.

Published: 1999-09-10 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0910 is rated Moderate Risk (47.2/100): CVSS Medium severity, with high exploitation likelihood (EPSS 5.78%, 92th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-1999-0910

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 19.63% 5.78% -13.86%
2 2025-03-30 14.70% 19.63% +4.94%
3 2025-03-29 — 14.70% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0910

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-1999-0910

Affected software / configurations for CVE-1999-0910

Vendor Product Version Raw CPE
microsoft commercial_internet_system 2.0 cpe:2.3:a:microsoft:commercial_internet_system:2.0:*:*:*:*:*:*:*
microsoft commercial_internet_system 2.5 cpe:2.3:a:microsoft:commercial_internet_system:2.5:*:*:*:*:*:*:*
microsoft site_server 3.0 cpe:2.3:a:microsoft:site_server:3.0:*:*:*:*:*:*:*
microsoft site_server_commerce 3.0 cpe:2.3:a:microsoft:site_server_commerce:3.0:alpha:*:*:*:*:*:*

References for CVE-1999-0910

cvelogic Threat Intelligence