CVE-2023-33383Public exploit

Device reboot via oversized BLE RPC write

Published Aug 2, 2023 · Updated Oct 17, 2024

Out-of-bounds read in the BLE RPC path of Shelly Group SE's Shelly Pro 4PM 0.11.0 allows physically proximate attackers to reboot the device. A write to GATT handle 0x000d sets an arbitrary expected length, and oversized data written to handle 0x0008 drives the BLE stack beyond that boundary. Bluetooth access within radio range requires no authentication; the resulting reset interrupts relay control and can trigger a preconfigured script.

CVSS severity5.3
Medium
EPSS probability4.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds read in the BLE RPC path of Shelly Group SE's Shelly Pro 4PM 0.11.0 allows physically proximate attackers to reboot the device. A write to GATT handle 0x000d sets an arbitrary expected length, and oversized data written to handle 0x0008 drives the BLE stack beyond that boundary. Bluetooth access within radio range requires no authentication; the resulting reset interrupts relay control and can trigger a preconfigured script.

The record

CVE
CVE-2023-33383
Published
Aug 2, 2023
Updated
Oct 17, 2024
Vendor
Shelly Group SE
Product
Shelly Pro 4PM
Classifications
CWE-125, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0.11.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Shelly Group SE · Shelly Pro 4PMversion=0.11.

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo