CVE-2026-21999
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I. Basic Information for CVE-2026-21999
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Vulnerability in the XML Database component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise XML Database. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all XML Database accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Oracle Database Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Oracle Database Server是美国甲骨文（Oracle）公司的一套关系数据库管理系统。该数据库管理系统提供数据管理、分布式处理等功能。 Oracle Database Server 23.4.0版本至23.26.1版本存在安全漏洞，该漏洞源于XML Database组件问题，可能导致未经身份验证的攻击者通过HTTPS网络访问，在人为交互下访问关键数据或所有数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Oracle Corporation | Oracle Database Server | 23.4.0 ~ 23.26.1 | - |
II. Public POCs for CVE-2026-21999
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.oracle.com/security-alerts/cpuapr2026.htmlvendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-21999
Same Patch Batch · Oracle Corporation · 2026-04-21 · 102 CVEs total
| CVE-2026-34275 | 9.8 CRITICAL | Oracle Advanced Inbound Telephony 安全漏洞 |
| CVE-2026-34287 | 9.1 CRITICAL | Oracle Identity Manager Connector 安全漏洞 |
| CVE-2026-34286 | 9.1 CRITICAL | Oracle Identity Manager Connector 安全漏洞 |
| CVE-2026-34285 | 9.1 CRITICAL | Oracle Identity Manager Connector 安全漏洞 |
| CVE-2026-34279 | 9.1 CRITICAL | Oracle Enterprise Manager Base Platform 安全漏洞 |
| CVE-2026-34291 | 8.7 HIGH | Oracle HTTP Server 安全漏洞 |
| CVE-2026-21997 | 8.5 HIGH | Oracle Life Sciences Empirica Signal 安全漏洞 |
| CVE-2026-34309 | 8.1 HIGH | Oracle PeopleSoft Enterprise PeopleTools 安全漏洞 |
| CVE-2026-35243 | 7.8 HIGH | Oracle Application Development Framework 安全漏洞 |
| CVE-2026-22011 | 7.6 HIGH | Oracle Applications DBA 安全漏洞 |
| CVE-2026-35245 | 7.5 HIGH | Oracle VM VirtualBox 安全漏洞 |
| CVE-2026-34290 | 7.5 HIGH | Oracle Identity Manager Connector 安全漏洞 |
| CVE-2026-35251 | 7.5 HIGH | Oracle VM VirtualBox 安全漏洞 |
| CVE-2026-34282 | 7.5 HIGH | Oracle多款产品 安全漏洞 |
| CVE-2026-34320 | 7.5 HIGH | Oracle Financial Services Customer Screening 安全漏洞 |
| CVE-2026-34310 | 7.5 HIGH | Oracle Financial Services Analytical Applications Infrastructure 安全漏洞 |
| CVE-2026-35229 | 7.5 HIGH | Oracle Database Server 安全漏洞 |
| CVE-2026-35230 | 7.5 HIGH | Oracle VM VirtualBox 安全漏洞 |
| CVE-2026-35231 | 7.5 HIGH | Oracle Financial Services Transaction Filtering 安全漏洞 |
| CVE-2026-22016 | 7.5 HIGH | Oracle多款产品 安全漏洞 |
Showing top 20 of 102 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-21999
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