What is CVE-2021-23758?

CVE-2021-23758 is a high-severity vulnerability in Ajaxpro.2. CVSS score: 8.1/10. Published 2021-12-03.

How severe is CVE-2021-23758?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2021-23758 known to be exploited?

10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Ajaxpro.2

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.

EPSS: 0.878 (99.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a Ajaxpro.2 — versions 0

Public proof-of-concept exploits

numanturle/CVE-2021-23758-POC
rapid7/metasploit-framework
ARPSyndicate/cvemon
XRSec/AWVS-Update
k0mi-tg/CVE-POC
manas3c/CVE-POC
nomi-sec/PoC-in-GitHub
soosmile/POC
whoforget/CVE-POC
youwizard/CVE-POC

References

snyk.io/vuln/SNYK-DOTNET-AJAXPRO2-1925971
github.com/michaelschwarz/Ajax.NET-Professional/commit/b0e63be5f0bb20dfce507cb8…
packetstormsecurity.com/files/175677/AjaxPro-Deserialization-Remote-Code-Execut…

Frequently asked questions

What is CVE-2021-23758?: CVE-2021-23758 is a high-severity vulnerability in Ajaxpro.2. CVSS score: 8.1/10. Published 2021-12-03.
How severe is CVE-2021-23758?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2021-23758 known to be exploited?: 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.