CVE-2026-21999
Quick assessment
Affected
Oracle Corporation Oracle Database Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
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。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-21999
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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 |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-21999
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-21999 (1)
-
https://www.oracle.com/security-alerts/cpuapr2026.html vendor-advisory
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-2026-34286 | 9.1 CRITICAL | Oracle Identity Manager Connector 安全漏洞 |
| CVE-2026-34287 | 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-2026-35251 | 7.5 HIGH | Oracle VM VirtualBox 安全漏洞 |
| CVE-2026-34305 | 7.5 HIGH | Oracle WebLogic Server 安全漏洞 |
| CVE-2026-35231 | 7.5 HIGH | Oracle Financial Services Transaction Filtering 安全漏洞 |
| CVE-2026-35242 | 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-2026-34310 | 7.5 HIGH | Oracle Financial Services Analytical Applications Infrastructure 安全漏洞 |
| CVE-2026-35245 | 7.5 HIGH | Oracle VM VirtualBox 安全漏洞 |
| CVE-2026-35246 | 7.5 HIGH | Oracle VM VirtualBox 安全漏洞 |
| CVE-2026-22010 | 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 |
Showing top 20 of 102 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Oracle Database Server
V. Comments for CVE-2026-21999
No comments yet