CVE-2022-38864Public exploit

Application crash via short video header parsing

Published Sep 15, 2022 · Updated Aug 3, 2024

Buffer overflow in MPlayer and mencoder SVN-r38374-13.0.1 allows context-dependent attackers to crash the application via a crafted media file. The mp_unescape03() parser in libmpdemux/mpeg_hdr.c unconditionally copies the final two input bytes into a destination allocated to the input length, so inputs shorter than two bytes write beyond the heap allocation. The flaw is reached when a user opens or processes a malformed H.264 or VC-1 stream, and the published assessment limits the demonstrated consequence to an application crash.

CVSS severity5.5
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in MPlayer and mencoder SVN-r38374-13.0.1 allows context-dependent attackers to crash the application via a crafted media file. The mp_unescape03() parser in libmpdemux/mpeg_hdr.c unconditionally copies the final two input bytes into a destination allocated to the input length, so inputs shorter than two bytes write beyond the heap allocation. The flaw is reached when a user opens or processes a malformed H.264 or VC-1 stream, and the published assessment limits the demonstrated consequence to an application crash.

The record

CVE
CVE-2022-38864
Published
Sep 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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 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 exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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