CVE-2023-36872

Local heap-memory disclosure

Published Jul 11, 2023 · Updated Jan 1, 2025

Information disclosure in Microsoft VP9 Video Extensions before 1.0.61591.0 allows local users to read heap memory through crafted media. Microsoft has not published the affected decoder locus or the invalid input-validation operation that exposes memory during VP9 processing. Exploitation requires a user to open crafted content, and the reported consequence is confidentiality loss without integrity or availability impact.

CVSS severity5.5
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Microsoft VP9 Video Extensions before 1.0.61591.0 allows local users to read heap memory through crafted media. Microsoft has not published the affected decoder locus or the invalid input-validation operation that exposes memory during VP9 processing. Exploitation requires a user to open crafted content, and the reported consequence is confidentiality loss without integrity or availability impact.

The record

CVE
CVE-2023-36872
Published
Jul 11, 2023
Updated
Jan 1, 2025
Vendor
Microsoft
Product
VP9 Video Extensions
Classifications
CWE-20
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 1, 2025Record 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=1.0.0.0 <1.0.61591.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · VP9 Video Extensionsversion=1.0.0.0 <1.0.61591.0

Published CVSS scores

5.5Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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

Weakness, pattern, technique

CWE-20Improper Input Validation

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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