CVE-2026-14297

Memory corruption via unchecked RACP payload length

Published Sep 7, 2026 · Updated Sep 8, 2026

Buffer overflow in nRF Connect SDK 2.2.0 through 3.3.0 allows physically proximate attackers to corrupt adjacent BSS memory via Bluetooth LE. The CGMS RACP write handler passes the full attacker-controlled ATT payload length to memcpy without checking it against the 20-byte req_buf array. Reachability requires an enabled CGMS server, pairing, an untrusted BLE peer, and a configured ATT MTU above 23; consequences range from a crash or RAM disclosure to code execution depending on the firmware's BSS layout.

CVSS severity8.7
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in nRF Connect SDK 2.2.0 through 3.3.0 allows physically proximate attackers to corrupt adjacent BSS memory via Bluetooth LE. The CGMS RACP write handler passes the full attacker-controlled ATT payload length to memcpy without checking it against the 20-byte req_buf array. Reachability requires an enabled CGMS server, pairing, an untrusted BLE peer, and a configured ATT MTU above 23; consequences range from a crash or RAM disclosure to code execution depending on the firmware's BSS layout.

The record

CVE
CVE-2026-14297
Published
Sep 7, 2026
Updated
Sep 8, 2026
Vendor
Nordic Semiconductor ASA
Product
nRF Connect SDK
Classifications
T1210
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 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=2.2.0 <=3.3.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Nordic Semiconductor ASA · nRF Connect SDKversion=2.2.0 <=3.3.0

Published CVSS scores

8.7Nordic Semiconductor ASACVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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

T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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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