CVE-1999-0777

IIS FTP servers may allow a remote attacker to read or delete files on the server, even if they have "No Access" permissions.

Published: 1999-09-23 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0777 is rated Moderate Risk (55/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.34%). Review affected assets and schedule 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-1999-0777

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 2025-03-30 3.70% 1.34% -2.36%
2 2025-03-29 1.34% 3.70% +2.36%
3 2025-03-17 — 1.34% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0777

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P 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:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-1999-0777

Affected software / configurations for CVE-1999-0777

Vendor Product Version Raw CPE
microsoft commercial_internet_system 2.5 cpe:2.3:a:microsoft:commercial_internet_system:2.5:*:*:*:*:*:*:*
microsoft internet_information_server 4.0 cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*

References for CVE-1999-0777

cvelogic Threat Intelligence