CVE-2026-18281

Code execution via L2CAP heap overflow

Published Aug 20, 2026 · Updated Aug 20, 2026

Heap-based buffer overflow in Bluetooth L2CAP handling in Sony XAV-9500ES 3.02.00 allows attackers to execute code via crafted packets. The l2_reassemble_sdu path copies a user-supplied L2CAP SDU length into a heap buffer without validating that the claimed packet length fits the destination allocation. Reachability is limited to a paired malicious Bluetooth device, so exploitation requires successful pairing before code runs in the device context.

CVSS severity8.0
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Bluetooth L2CAP handling in Sony XAV-9500ES 3.02.00 allows attackers to execute code via crafted packets. The l2_reassemble_sdu path copies a user-supplied L2CAP SDU length into a heap buffer without validating that the claimed packet length fits the destination allocation. Reachability is limited to a paired malicious Bluetooth device, so exploitation requires successful pairing before code runs in the device context.

The record

CVE
CVE-2026-18281
Published
Aug 20, 2026
Updated
Aug 20, 2026
Vendor
Sony Group Corporation
Product
XAV-9500ES
Classifications
CWE-122
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.02.00

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Sony Group Corporation · XAV-9500ESversion=3.02.00

Published CVSS scores

8.0ZDICVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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