CVE-2023-47360Public exploitNetwork attack vector

Crash via underflowed MMS packet length

Published Nov 7, 2023 · Updated May 28, 2026

Integer underflow in VLC media player 3.0.19 and earlier allows remote attackers to crash the player via a crafted MMS stream. GetPacket subtracts 8 from the attacker-controlled 16-bit i_size2 field and assigns the negative result to the unsigned packet-length field without rejecting it. Exploitation requires a user to open the stream; the grounded consequence is a player crash, while code execution was not demonstrated.

CVSS severity7.5
High
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer underflow in VLC media player 3.0.19 and earlier allows remote attackers to crash the player via a crafted MMS stream. GetPacket subtracts 8 from the attacker-controlled 16-bit i_size2 field and assigns the negative result to the unsigned packet-length field without rejecting it. Exploitation requires a user to open the stream; the grounded consequence is a player crash, while code execution was not demonstrated.

The record

CVE
CVE-2023-47360
Published
Nov 7, 2023
Updated
May 28, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-191, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2023CVE publishedPublication date reported by the CVE source.
  2. May 28, 2026Record 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

7.5CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
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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