CVE-1999-1547

Exp

Oracle Web Listener 2.1 allows remote attackers to bypass access restrictions by replacing a character in the URL with its HTTP-encoded (hex) equivalent.

Published: 1999-11-25 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1547 is rated High Exploit Risk (83.2/100): CVSS High severity, with high exploitation likelihood (EPSS 9.67%, 95th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +9.04% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-1999-1547

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-1999-1547

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 0.64% 9.67% +9.04%
2 2025-10-20 0.55% 0.64% +0.09%
3 2025-03-17 — 0.55% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1547

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-1999-1547

Affected software / configurations for CVE-1999-1547

Vendor Product Version Raw CPE
oracle web_listener 2.1 cpe:2.3:a:oracle:web_listener:2.1:*:*:*:*:*:*:*

References for CVE-1999-1547

cvelogic Threat Intelligence