CVE-2022-39901

Cellular traffic exposure via improper authentication

Published Dec 8, 2022 · Updated Apr 23, 2025

Improper authentication in the Exynos baseband before SMR Dec-2022 Release 1 allows remote attackers to disable cellular traffic encryption. Samsung has not disclosed which baseband authentication path fails or how untrusted signaling bypasses its validation. The attacker must be within cellular-network reach of the UE and gNodeB; exploitation removes confidentiality protection without reported integrity or availability impact.

CVSS severity6.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in the Exynos baseband before SMR Dec-2022 Release 1 allows remote attackers to disable cellular traffic encryption. Samsung has not disclosed which baseband authentication path fails or how untrusted signaling bypasses its validation. The attacker must be within cellular-network reach of the UE and gNodeB; exploitation removes confidentiality protection without reported integrity or availability impact.

The record

CVE
CVE-2022-39901
Published
Dec 8, 2022
Updated
Apr 23, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-287, T1600
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=Exynos baseband <SMR Dec-2022 Release 1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=Exynos baseband <SMR Dec-2022 Release 1

Published CVSS scores

6.5Samsung MobileCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1600Weaken Encryption

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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