Threat Intelligence / CVE / CVE-2026-21536

CVE-2026-21536 — Microsoft Devices Pricing Program

CVSS v3.1 9.8 (CRITICAL) · EPSS 0.4% (higher than 63.3% of all scored CVEs) · Priority 7.4/10 · Published 2026-03-05

As of 2026-03-16, CVE-2026-21536 is a CRITICAL-severity vulnerability in Microsoft Devices Pricing Program, CVSS v3.1 9.8, EPSS 0.4% (63.3th percentile). Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2026-21536, most recently “Command Injection Vulnerabilities in Bing Images Processing Pipeline (CVE-2026-32194, CVE-2026-32191, CVE-2026-21536) — RCE as NT AUTHORITY\SYSTEM”.

Last updated: 2026-03-16

What is CVE-2026-21536?

Microsoft Devices Pricing Program Remote Code Execution Vulnerability

The record classifies CVE-2026-21536 under weakness classes CWE-434, NVD-CWE-noinfo. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 191 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 9.8 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (FIRST): 0.4% probability of exploitation in the next 30 days, higher than 63.3% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 7.4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-03-05, last modified 2026-03-16

Is CVE-2026-21536 being exploited?

It currently carries a trending score of 21 in the Threadlinqs vulnerability feed.

Affected products and versions

Microsoft: Devices Pricing Program

How to fix CVE-2026-21536

The record marks a vendor fix as available for CVE-2026-21536. Patch reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21536. Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21536. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2026-21536

2 tracked threats in the Threadlinqs corpus reference CVE-2026-21536, either in the campaign’s CVE list or as an indicator on the campaign record.

Command Injection Vulnerabilities in Bing Images Processing Pipeline (CVE-2026-32194, CVE-2026-32191, CVE-2026-21536) — RCE as NT AUTHORITY\SYSTEM — CRITICAL · 2026-07-24
Microsoft Office RCE via Preview Pane (CVE-2026-26110, CVE-2026-26113) — March 2026 Patch Tuesday — CRITICAL · 2026-03-11

Sources

Seeded from research and not yet processed by the Threadlinqs enrichment pipeline, so blank CVSS, EPSS or KEV fields above mean NOT MEASURED rather than measured-absent.

msrc.microsoft.com

Full detection coverage & IOCs for threats exploiting CVE-2026-21536 are available via the Threadlinqs MCP server (Purple tier). View plans →

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