CVE-2026-55343

DecodeAmr Buffer Overflow in Android Media Player

Published Sep 15, 2026 CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
Description
In decodeAmr of ImsMediaAudioPlayer.cpp, there is a possible out-of-bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation.

Analysis

AI-generated

Technical impact

A buffer overflow exists within the decodeAmr function of the Android media player, uncovered by a missing bounds check. This flaw allows an attacker to write beyond the intended memory area, potentially enabling execution of arbitrary code. The vulnerability is classified as a buffer copy without proper size validation, and the official assessment indicates that no additional privileges are required for exploitation.

Affected Systems

The flaw is present in the Android operating system supplied by Google. No specific OS versions or build variants are listed, so any Android installation that includes the current, unpatched media audio player code could be vulnerable until a patch is applied.

Risk and Exploitability

The assigned CVSS score of 8.0 reflects high exploitable risk, and the EPSS score of < 1% indicates a very low but nonzero probability that the vulnerability will be exploited. The weakness requires user interaction, likely through the playback of a crafted AMR media file, meaning that a malicious file needs to be opened or played by the user. Because it is not listed in the CISA KEV catalog, no public exploits are confirmed, but the high severity and need for ordinary user action suggest that the vulnerability could be leveraged in targeted attacks.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the newest Android security update from Google that addresses the decodeAmr buffer overflow.
  • Upgrade the device to the latest Android release that includes the vendor patch, verifying that the media audio player has been revised.
  • Restrict exposure by disabling or removing legacy applications that invoke AMR decoding, or block malicious media content via mobile security controls.

Generated by OpenCVE AI on September 20, 2026 at 14:07 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:o:google:android:-:*:*:*:*:*:*:*
Type Values Removed Values Added
Title DecodeAmr Buffer Overflow in Android Media Player
Type Values Removed Values Added
Title Out-of-Bounds Write in Android AMR Decoder Leading to Remote Code Execution
Type Values Removed Values Added
Title Out-of-Bounds Write in Android AMR Decoder Leading to Remote Code Execution
Type Values Removed Values Added
Weaknesses CWE-120
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Google
Google android
Vendors & Products Google
Google android
Type Values Removed Values Added
Description In decodeAmr of ImsMediaAudioPlayer.cpp, there is a possible out-of-bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation.
References
Weaknesses
  • CWE-120

    Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Sources

Status
PUBLISHED
Assigner
Google_Devices
Published
Updated
Sep 16, 2026, 3:57 AM
Reserved
Jun 16, 2026, 5:52 PM
Status
Analyzed
Published
Sep 15, 2026, 7:17 PM
Modified
Sep 21, 2026, 5:20 PM