CVE-2025-70309Public exploit

Application crash via unchecked reverse-sample copy

Published Jan 15, 2026 · Updated Jan 15, 2026

Stack overflow in GPAC 2.4.0 allows attackers to crash a GPAC-based application by processing a crafted WAV file during reverse playback. In pcmreframe_flush_packet, the reverse-sample swap copies a WAV-derived sample width into a fixed 100-byte stack buffer without checking its size. Triggering requires reverse playback and a WAV header whose channels and bit depth produce more than 100 bytes per sample; only a crash was demonstrated.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in GPAC 2.4.0 allows attackers to crash a GPAC-based application by processing a crafted WAV file during reverse playback. In pcmreframe_flush_packet, the reverse-sample swap copies a WAV-derived sample width into a fixed 100-byte stack buffer without checking its size. Triggering requires reverse playback and a WAV header whose channels and bit depth produce more than 100 bytes per sample; only a crash was demonstrated.

The record

CVE
CVE-2025-70309
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1499.004, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5CISA-ADPCVSS: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.

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation
T1204.002Malicious 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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