CRITICAL

CVE-2020-12471

CVSS v3

9.8

CRITICAL

EPSS Score

2.8 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2020-12471 yet.

Full record on NVD

Description

MonoX through 5.1.40.5152 allows remote code execution via HTML5Upload.ashx or Pages/SocialNetworking/lng/en-US/PhotoGallery.aspx because of deserialization in ModuleGallery.HTML5Upload, ModuleGallery.SilverLightUploadModule, HTML5Upload, and SilverLightUploadHandler.

Technical details

Published: 2020-04-29

Frequently asked questions

What is CVE-2020-12471?

Is CVE-2020-12471 actively exploited?

Active exploitation of CVE-2020-12471 has not been confirmed. Its EPSS score was 2.8% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12471?

CVE-2020-12471 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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