CVE-2021-23758
악용 확인 Ajax.NET Professional Deserialization of Untrusted Data Vulnerability
악용 여부
악용 확인
2026-08-26
2026-09-09
CISA 미확인
Ajax.NET Professional Ajax.NET Professional
심각도 (발행처 발표값)
심각9.8
3.1
NVD (미국 NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
악용 확률 (EPSS)
83.6%
83.63%
99.7%
2026-09-04
한국어 공식 권고
CISA 원문
Ajax.NET Professional (AjaxPro) contains a deserialization of untrusted data vulnerability that could allow for remote code execution via arbitrary .NET classes. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.— CISA KEV · shortDescription 원문
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.— CISA KEV · requiredAction 원문
취약점 설명 (NVD 원문)
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.
CWE-502 CWE-502
악용 확률 변화
| 기준일 | 확률 | 백분위 |
|---|---|---|
| 2026-09-04 | 83.63% | 99.7% |
| 2026-09-03 | 83.63% | 99.7% |
우리가 매일 저장한 EPSS 스냅샷입니다. 원본 API 는 오늘 값만 제공하므로, 이 표는 우리가 수집을 시작한 이후만 보여줍니다.
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