CVE-2020-0872Network attack vector

Script execution via unencoded source snippets

Published Mar 12, 2020 · Updated Aug 4, 2024

Cross-site scripting in Microsoft Application Inspector 1.0.23 and earlier allows attackers to execute script via a crafted source file. The HTML report generator inserts example strings from analyzed third-party source into its output without HTML encoding, so browser-active markup remains executable. Exploitation requires a user to analyze the malicious source and view the generated report; the script can read report contents, including source snippets, and send them to an external server.

CVSS severity9.6
Critical
EPSS probability10.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Microsoft Application Inspector 1.0.23 and earlier allows attackers to execute script via a crafted source file. The HTML report generator inserts example strings from analyzed third-party source into its output without HTML encoding, so browser-active markup remains executable. Exploitation requires a user to analyze the malicious source and view the generated report; the script can read report contents, including source snippets, and send them to an external server.

The record

CVE
CVE-2020-0872
Published
Mar 12, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Application Inspector
Classifications
CWE-79, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Application Inspectorversion=unspecified

Published CVSS scores

6.8NIST National Vulnerability DatabaseAV:N/AC:M/Au:N/C:P/I:P/A:P
9.6NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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