Vulnerability-Lookup

CNVD-2021-95598

Vulnerability from cnvd - Published: 2021-12-09

Title

Ajax.NET Professional存在未明漏洞

Description

Ajax.NET Professional是Ajax.NET Professional (AjaxPro) 是最早可用于 Microsoft ASP.NET 的 AJAX 框架之一。 Ajax.NET Professional 存在安全漏洞，该漏洞源于存在反序列化任意.NET类的可能性。攻击者可利用该漏洞执行反序列化攻击，进而远程执行代码。

Severity

高

Patch Name

Ajax.NET Professional存在未明漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/michaelschwarz/Ajax.NET-Professional/commit/b0e63be5f0bb20dfce507cb8a1a9568f6e73de57

Reference

https://snyk.io/vuln/SNYK-DOTNET-AJAXPRO2-1925971

Impacted products

Name
AjaxPro Ajax.NET Professional <21.10.30.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-23758"
    }
  },
  "description": "Ajax.NET Professional\u662fAjax.NET Professional (AjaxPro) \u662f\u6700\u65e9\u53ef\u7528\u4e8e Microsoft ASP.NET \u7684 AJAX \u6846\u67b6\u4e4b\u4e00\u3002\n\nAjax.NET Professional \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5b58\u5728\u53cd\u5e8f\u5217\u5316\u4efb\u610f.NET\u7c7b\u7684\u53ef\u80fd\u6027\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u53cd\u5e8f\u5217\u5316\u653b\u51fb\uff0c\u8fdb\u800c\u8fdc\u7a0b\u6267\u884c\u4ee3\u7801\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/michaelschwarz/Ajax.NET-Professional/commit/b0e63be5f0bb20dfce507cb8a1a9568f6e73de57",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-95598",
  "openTime": "2021-12-09",
  "patchDescription": "Ajax.NET Professional\u662fAjax.NET Professional (AjaxPro) \u662f\u6700\u65e9\u53ef\u7528\u4e8e Microsoft ASP.NET \u7684 AJAX \u6846\u67b6\u4e4b\u4e00\u3002\r\n\r\nAjax.NET Professional \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5b58\u5728\u53cd\u5e8f\u5217\u5316\u4efb\u610f.NET\u7c7b\u7684\u53ef\u80fd\u6027\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u53cd\u5e8f\u5217\u5316\u653b\u51fb\uff0c\u8fdb\u800c\u8fdc\u7a0b\u6267\u884c\u4ee3\u7801\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": "Ajax.NET Professional\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "AjaxPro Ajax.NET Professional \u003c21.10.30.1"
  },
  "referenceLink": "https://snyk.io/vuln/SNYK-DOTNET-AJAXPRO2-1925971",
  "serverity": "\u9ad8",
  "submitTime": "2021-12-07",
  "title": "Ajax.NET Professional\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2021-23758 (GCVE-0-2021-23758)

Vulnerability from cvelistv5 – Published: 2021-12-03 20:05 – Updated: 2026-08-27 03:56

Title

Deserialization of Untrusted Data

Summary

All versions of package ajaxpro.2 are vulnerable to Deserialization of Untrusted Data due to the possibility of deserialization of arbitrary .NET classes, which can be abused to gain remote code execution.

Severity

8.1 (High)


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

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-26 00:00 UTC

CWE

Deserialization of Untrusted Data
CWE-502 - Deserialization of Untrusted Data

Assigner

snyk mitre root

References

5 references

URL	Tags
https://snyk.io/vuln/SNYK-DOTNET-AJAXPRO2-1925971
https://github.com/michaelschwarz/Ajax.NET-Profes…
http://packetstormsecurity.com/files/175677/AjaxP…
https://blog.talosintelligence.com/uat-10147-chin…	third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
n/a	AjaxPro.2	Affected: 0 , < unspecified (custom)

Date Public

2021-12-03 00:00

Credits

Hans-Martin Münch (MOGWAI LABS)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T19:14:09.129Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "tags": [
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            ],
            "url": "https://snyk.io/vuln/SNYK-DOTNET-AJAXPRO2-1925971"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/michaelschwarz/Ajax.NET-Professional/commit/b0e63be5f0bb20dfce507cb8a1a9568f6e73de57"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/175677/AjaxPro-Deserialization-Remote-Code-Execution.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-23758",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-26T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-08-26",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-23758"
              },
              "type": "kev"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-502",
                "description": "CWE-502 Deserialization of Untrusted Data",
                "lang": "en",
                "type": "CWE"
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            ]
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        "providerMetadata": {
          "dateUpdated": "2026-08-27T03:56:43.403Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
        "references": [
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            "tags": [
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            "url": "https://blog.talosintelligence.com/uat-10147-chinese-speaking-adversary-integrates-agentic-ai-into-post-compromise-operations/"
          },
          {
            "tags": [
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            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-23758"
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            "value": "CVE-2021-23758 added to CISA KEV"
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        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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          "vendor": "n/a",
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      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      ],
      "problemTypes": [
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.