Vulnerability-Lookup

CNVD-2026-21570

Vulnerability from cnvd - Published: 2026-05-25

Title

Apache CloudStack安全绕过漏洞（CNVD-2026-21570）

Description

Apache CloudStack是美国阿帕奇（Apache）基金会的一套基础架构即服务（IaaS）云计算平台。该平台主要用于部署和管理大型虚拟机网络。 Apache CloudStack存在安全绕过漏洞，攻击者可利用该漏洞导致任何经过身份验证的用户在启用插件的环境中通过特定API使用其他用户的备份创建新虚拟机。

Severity

中

Patch Name

Apache CloudStack安全绕过漏洞（CNVD-2026-21570）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://cloudstack.apache.org/downloads/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-66171

Impacted products

Name
Apache CloudStack >=4.21.0.0，<=4.22.0.0

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-66171",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-66171"
    }
  },
  "description": "Apache CloudStack\u662f\u7f8e\u56fd\u963f\u5e15\u5947\uff08Apache\uff09\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u57fa\u7840\u67b6\u6784\u5373\u670d\u52a1\uff08IaaS\uff09\u4e91\u8ba1\u7b97\u5e73\u53f0\u3002\u8be5\u5e73\u53f0\u4e3b\u8981\u7528\u4e8e\u90e8\u7f72\u548c\u7ba1\u7406\u5927\u578b\u865a\u62df\u673a\u7f51\u7edc\u3002\n\nApache CloudStack\u5b58\u5728\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u4efb\u4f55\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u7684\u7528\u6237\u5728\u542f\u7528\u63d2\u4ef6\u7684\u73af\u5883\u4e2d\u901a\u8fc7\u7279\u5b9aAPI\u4f7f\u7528\u5176\u4ed6\u7528\u6237\u7684\u5907\u4efd\u521b\u5efa\u65b0\u865a\u62df\u673a\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://cloudstack.apache.org/downloads/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-21570",
  "openTime": "2026-05-25",
  "patchDescription": "Apache CloudStack\u662f\u7f8e\u56fd\u963f\u5e15\u5947\uff08Apache\uff09\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u57fa\u7840\u67b6\u6784\u5373\u670d\u52a1\uff08IaaS\uff09\u4e91\u8ba1\u7b97\u5e73\u53f0\u3002\u8be5\u5e73\u53f0\u4e3b\u8981\u7528\u4e8e\u90e8\u7f72\u548c\u7ba1\u7406\u5927\u578b\u865a\u62df\u673a\u7f51\u7edc\u3002\r\n\r\nApache CloudStack\u5b58\u5728\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u4efb\u4f55\u7ecf\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u7684\u7528\u6237\u5728\u542f\u7528\u63d2\u4ef6\u7684\u73af\u5883\u4e2d\u901a\u8fc7\u7279\u5b9aAPI\u4f7f\u7528\u5176\u4ed6\u7528\u6237\u7684\u5907\u4efd\u521b\u5efa\u65b0\u865a\u62df\u673a\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Apache CloudStack\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\uff08CNVD-2026-21570\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Apache CloudStack \u003e=4.21.0.0\uff0c\u003c=4.22.0.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-66171",
  "serverity": "\u4e2d",
  "submitTime": "2026-05-11",
  "title": "Apache CloudStack\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\uff08CNVD-2026-21570\uff09"
}

CVE-2025-66171 (GCVE-0-2025-66171)

Vulnerability from cvelistv5 – Published: 2026-05-08 12:11 – Updated: 2026-05-09 06:42

Title

Apache CloudStack: Any user can create a new VM from backups they should not have access to

Summary

The CloudStack Backup plugin has an improper access logic in versions 4.21.0.0 and 4.22.0.0. Anyone with authenticated user-account access in CloudStack 4.21.0.0+ environments, where this plugin is enabled and have access to specific APIs can create new VMs using backups of any other user of the environment. Backup plugin users using CloudStack 4.21.0.0+ are recommended to upgrade to CloudStack version 4.22.0.1, which fixes this issue.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-08 17:55 UTC

CWE

CWE-359 - Exposure of Private Personal Information to an Unauthorized Actor

Assigner

apache mitre root

References

2 references

URL	Tags
https://lists.apache.org/thread/n8mt5b7wkpysstb8w…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/05/09/2

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache CloudStack	Affected: 4.21.0.0 , ≤ 4.22.0.0 (custom)

Credits

Fabricio Duarte <fabricio.duarte.jr@gmail.com> Gabriel Ortiga Fernandes <gabriel.ortiga@hotmail.com> Gabriel Pordeus Santos <gabrielpordeus@gmail.com>

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
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              "baseScore": 6.5,
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
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                "options": [
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                ],
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                "timestamp": "2026-05-08T17:55:40.846619Z",
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            }
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.