CVE-1999-0012

Some web servers under Microsoft Windows allow remote attackers to bypass access restrictions for files with long file names.

Published: 1998-02-06 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0012 is rated High Risk (66.9/100): CVSS High severity, with high exploitation likelihood (EPSS 18.20%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +17.47% over the last day, indicating growing attacker interest. 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-1999-0012

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 0.72% 18.20% +17.47%
2 2026-03-07 0.46% 0.72% +0.27%
3 2025-07-30 — 0.46% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0012

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.0 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.2 4.7 134c704f-9b21-4f2e-91b3-4a467353bcc0
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-1999-0012

OS Trackers for CVE-1999-0012

vendor priority summary link
alpine — CVE-1999-0012: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-1999-0012

Affected software / configurations for CVE-1999-0012

Vendor Product Version Raw CPE
microsoft frontpage — cpe:2.3:a:microsoft:frontpage:*:*:*:*:*:*:*:*
microsoft internet_information_server 4.0 cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*
microsoft personal_web_server 4.0 cpe:2.3:a:microsoft:personal_web_server:4.0:*:*:*:*:*:*:*
netscape enterprise_server 3.0 cpe:2.3:a:netscape:enterprise_server:3.0:*:*:*:*:*:*:*
netscape fasttrack_server 2.01 cpe:2.3:a:netscape:fasttrack_server:2.01:*:*:*:*:*:*:*
netscape fasttrack_server 3.01 cpe:2.3:a:netscape:fasttrack_server:3.01:*:*:*:*:*:*:*

References for CVE-1999-0012

cvelogic Threat Intelligence