CVE-2021-21540
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I. Basic Information for CVE-2021-21540
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a stack-based overflow vulnerability. A remote authenticated attacker could potentially exploit this vulnerability to overwrite configuration information by injecting arbitrarily large payload.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Dell EMC iDRAC9 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DELL Dell EMC iDRAC9是美国戴尔（DELL）公司的一套包含硬件和软件的系统管理解决方案。该方案为Dell PowerEdge系统提供远程管理、崩溃系统恢复和电源控制等功能。 Dell EMC iDRAC9 4.40.00.00 之前版本存在安全漏洞，通过身份验证的远程攻击者可利用该漏洞通过注入任意大的负载来覆盖配置信息。
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 |
|---|---|---|---|---|
| Dell | Integrated Dell Remote Access Controller (iDRAC) | unspecified ~ 4.40.00.00 | - |
II. Public POCs for CVE-2021-21540
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.dell.com/support/kbdoc/000185293x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-21540
Same Patch Batch · Dell · 2021-04-30 · 14 CVEs total
| CVE-2021-21507 | 8.8 HIGH | Dell EMC Networking X-Series 加密问题漏洞 |
| CVE-2021-21530 | 8.3 HIGH | Dell OpenManage Enterprise 操作系统命令注入漏洞 |
| CVE-2021-21531 | 8.1 HIGH | Dell EMC Unisphere for PowerMax 安全漏洞 |
| CVE-2021-21535 | 7.4 HIGH | Dell Hybrid Client 访问控制错误漏洞 |
| CVE-2021-21547 | 6.4 MEDIUM | Dell EMC Unity,UnityVSA和Unity XT 安全漏洞 |
| CVE-2021-21536 | 6.2 MEDIUM | Dell Hybrid Client 信息泄露漏洞 |
| CVE-2021-21537 | 6.2 MEDIUM | Dell Hybrid Client 信息泄露漏洞 |
| CVE-2021-21541 | 6.1 MEDIUM | Dell EMC iDRAC9 跨站脚本漏洞 |
| CVE-2021-21539 | 5.9 MEDIUM | Dell EMC iDRAC9 安全漏洞 |
| CVE-2021-21543 | 4.8 MEDIUM | Dell EMC iDRAC9 跨站脚本漏洞 |
| CVE-2021-21542 | 4.8 MEDIUM | Dell EMC iDRAC9 跨站脚本漏洞 |
| CVE-2021-21534 | 4.0 MEDIUM | Dell Hybrid Client 信息泄露漏洞 |
| CVE-2021-21544 | 2.7 LOW | Dell EMC iDRAC9 授权问题漏洞 |
IV. Related Vulnerabilities
Same weakness: CWE-121
- CVE-2026-8258
Squirrel sqstdstring.cpp validate_format stack-based overflo - CVE-2026-8234
EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based - CVE-2026-6665
PgBouncer buffer overflow in SCRAM - CVE-2026-41509
Integer underflow in crypto_sign_open() leads to buffer over - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
V. Comments for CVE-2021-21540
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