CVE-2021-23758
CRITICALCVSS 9.8/10EPSS 88.77%
Last modified
CVE-2021-23758 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 88.77% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ajaxpro.2 Project | Ajaxpro.2 | < 21.10.30.1 |
References
- https://github.com/michaelschwarz/Ajax.NET-Professional/commit/b0e63be5f0bb20dfce507cb8a1a9568f6e73de57Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-DOTNET-AJAXPRO2-1925971Third Party Advisory
- https://github.com/michaelschwarz/Ajax.NET-Professional/commit/b0e63be5f0bb20dfce507cb8a1a9568f6e73de57Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-DOTNET-AJAXPRO2-1925971Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-23758?
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.
How severe is CVE-2021-23758?
CVE-2021-23758 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 88.77% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23758?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-23758?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST