CVE-2022-35623

Heap overflow via mixed-type segmented packet reassembly

Published Aug 15, 2022 · Updated Aug 3, 2024

Heap overflow in Nordic nRF5 SDK for Mesh 5.0 allows remote authenticated users to corrupt memory via crafted Bluetooth Mesh packets. The segmented-message reassembly path associates control and access packets that share a SeqAuth value, allowing larger access data to overrun a control-packet heap allocation. Exploitation requires access to the same Bluetooth Mesh network; successful corruption can disclose memory, alter data, or interrupt the device.

CVSS severity8.8
High
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap overflow in Nordic nRF5 SDK for Mesh 5.0 allows remote authenticated users to corrupt memory via crafted Bluetooth Mesh packets. The segmented-message reassembly path associates control and access packets that share a SeqAuth value, allowing larger access data to overrun a control-packet heap allocation. Exploitation requires access to the same Bluetooth Mesh network; successful corruption can disclose memory, alter data, or interrupt the device.

The record

CVE
CVE-2022-35623
Published
Aug 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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 vectoradjacent
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.2MITRECVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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