Unrated severityNVD Advisory· Published Oct 16, 2026· Updated Oct 16, 2026

CVE-2025-55640

Description

A heap buffer overflow in the stbl_AddSize function (isomedia/stbl_write.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Gpac/MP4Boxllm-fuzzy
Range: <2.4
Gpac/Gpacllm-fuzzy
Range: <2.4

Patches

Vulnerability mechanics

References

github.com/gpac/gpac/commit/321624f28d19a413449fd1718d1eb59037f8f7fcnvd
github.com/gpac/gpac/issues/3261nvd
github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/25/25_poc.mp4nvd
infosec.exchange/@sigdevel/116769271709415444nvd

News mentions

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patch	-0.070
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