CVE-2022-38856Public exploit

Process interruption via MOV index buffer overflow

Published Sep 15, 2022 · Updated Aug 3, 2024

Buffer overflow in mov_build_index in MPlayer and MEncoder SVN-r38374-13.0.1 allows local users to interrupt either program via a crafted MOV file. The flaw resides in libmpdemux/demux_mov.c; public records identify an out-of-bounds write but do not disclose the faulty index calculation or destination buffer. Exploitation requires a user to open attacker-supplied media, after which the affected process can be interrupted.

CVSS severity5.5
Medium
EPSS probability0.31%
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 mov_build_index in MPlayer and MEncoder SVN-r38374-13.0.1 allows local users to interrupt either program via a crafted MOV file. The flaw resides in libmpdemux/demux_mov.c; public records identify an out-of-bounds write but do not disclose the faulty index calculation or destination buffer. Exploitation requires a user to open attacker-supplied media, after which the affected process can be interrupted.

The record

CVE
CVE-2022-38856
Published
Sep 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
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

5.5NIST NVDCVSS: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
T1204.002Malicious File

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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