CVE-2026-32191Public exploitNetwork attack vector

Unauthenticated RCE via pipe-prefixed SVG reference

Published Mar 19, 2026 · Updated Mar 19, 2026

OS command injection in Microsoft Bing Images allows remote attackers to execute commands through a crawler-fetched SVG image. The server-side ingestion path passes the SVG's pipe-prefixed image reference to a delegate-backed conversion pipeline that invokes a shell. No authentication, cookies, or user interaction are required; successful requests run commands as root or SYSTEM on Microsoft-managed workers.

CVSS severity9.8
Critical
EPSS probability0.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Microsoft Bing Images allows remote attackers to execute commands through a crawler-fetched SVG image. The server-side ingestion path passes the SVG's pipe-prefixed image reference to a delegate-backed conversion pipeline that invokes a shell. No authentication, cookies, or user interaction are required; successful requests run commands as root or SYSTEM on Microsoft-managed workers.

The record

CVE
CVE-2026-32191
Published
Mar 19, 2026
Updated
Mar 19, 2026
Vendor
Microsoft
Product
Bing Images
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Bing Imagesversion=-

Published CVSS scores

9.8Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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