← Global Threat Landscape

CVE-2021-23758

CWE-502

Critical

93.4

RPS

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.

Source: NVD

Signals

CVSS
8.1
High · v3.1
EPSS
82.57%
Probability of exploitation in the next 30 days (FIRST)
CISA KEV
In CISA KEV since Aug 2026
Fix commit
Fix commit known
Sources: MoreFixes, FreshFixes
Weakness
CWE-502
Published
3 Dec 2021
Last modified 27 Aug 2026

How to read these signals: RPS · EPSS · CISA KEV · Data sources

Get this score from the API

curl -H "Authorization: Bearer dsec_live_xxxxxxxx" \
  https://api.intelligence.devsecure.io/api/v1/rps/CVE-2021-23758

Replace the placeholder with your key. Get a free API key or rank your own CVEs.

Data as of 7 Oct 2026, 05:16 UK time

CVE-2021-23758 · RPS 93.4 · DevSecure Intelligence