---
title: "CVE-2026-56711: VLC media player - Integer Overflow"
description: "VLC media player contains an integer overflow in AllocatePicture due to 32-bit arithmetic on picture buffer size calculation, letting remote attackers cause out-of-bounds write via crafted PNG with large dimensions, exploit requires opening the file."
url: https://panop.io/threat-heartbeat/CVE-2026-56711/
---

# CVE-2026-56711 VLC media player - Integer Overflow

VLC media player contains an integer overflow in AllocatePicture due to 32-bit arithmetic on picture buffer size calculation, letting remote attackers cause out-of-bounds write via crafted PNG with large dimensions, exploit requires opening the file.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.12% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-56711)

## Details

Type

Integer Overflow

Impact

Remote Code Execution, Denial Of Service

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

9 September 2026

Updated

15 October 2026

Weakness

[CWE-190](https://cwe.mitre.org/data/definitions/190.html)

## Vendor fix

Update to the latest VLC media player version with the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-56711](https://nvd.nist.gov/vuln/detail/CVE-2026-56711)
- [https://www.vulncheck.com/advisories/vlc-media-player-3.0.0-through-3.0.23-heap-out-of-bounds-write-via-integer-overflow-in-picture-allocation](https://www.vulncheck.com/advisories/vlc-media-player-3.0.0-through-3.0.23-heap-out-of-bounds-write-via-integer-overflow-in-picture-allocation)
- [https://github.com/videolan/vlc](https://github.com/videolan/vlc)
- [https://github.com/videolan/vlc/blob/3.0.23/include/vlc\_picture.h](https://github.com/videolan/vlc/blob/3.0.23/include/vlc_picture.h)
- [https://github.com/videolan/vlc/blob/3.0.23/modules/codec/png.c](https://github.com/videolan/vlc/blob/3.0.23/modules/codec/png.c)
- [https://github.com/videolan/vlc/blob/3.0.23/modules/demux/image.c](https://github.com/videolan/vlc/blob/3.0.23/modules/demux/image.c)
- [https://github.com/videolan/vlc/blob/3.0.23/src/misc/picture.c](https://github.com/videolan/vlc/blob/3.0.23/src/misc/picture.c)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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