CVE-2023-38858Public exploitNetwork attack vector

Decoder crash via invalid MP4 metadata access

Published Aug 15, 2023 · Updated Aug 2, 2024

Invalid memory access in FAAD2 2.10.1 allows remote attackers to crash the faad command-line decoder via a crafted MP4 file. The mp4info function reads from the near-null address 0x4 at mp4read.c line 1039 while extracting metadata from malformed input. Exploitation requires user interaction to make faad process the file; the published ASAN trace demonstrates process termination, not code execution.

CVSS severity6.5
Medium
EPSS probability1.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid memory access in FAAD2 2.10.1 allows remote attackers to crash the faad command-line decoder via a crafted MP4 file. The mp4info function reads from the near-null address 0x4 at mp4read.c line 1039 while extracting metadata from malformed input. Exploitation requires user interaction to make faad process the file; the published ASAN trace demonstrates process termination, not code execution.

The record

CVE
CVE-2023-38858
Published
Aug 15, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002User Execution: Malicious 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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