CVE-2022-38866

Crash via AVI header out-of-bounds write

Published Sep 15, 2022 · Updated Aug 3, 2024

Out-of-bounds write in MPlayer SVN-r38374-13.0.1 and MEncoder SVN-r38374-13.0.1 allows attackers to crash via a crafted AVI file. The read_avi_header routine in libmpdemux/aviheader.c writes beyond its intended buffer while parsing a malformed AVI header; the exact triggering field is undisclosed. A user must open the crafted file, after which MPlayer or MEncoder can crash; no data access or modification is established.

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

What happened

Out-of-bounds write in MPlayer SVN-r38374-13.0.1 and MEncoder SVN-r38374-13.0.1 allows attackers to crash via a crafted AVI file. The read_avi_header routine in libmpdemux/aviheader.c writes beyond its intended buffer while parsing a malformed AVI header; the exact triggering field is undisclosed. A user must open the crafted file, after which MPlayer or MEncoder can crash; no data access or modification is established.

The record

CVE
CVE-2022-38866
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
5.5Canonical UbuntuCVSS: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.

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

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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