SARA / Free Tools / CVE / CVE-2023-21467

CVE-2023-21467 — Error in 3GPP specification implementation in Exynos baseband prior to SMR Apr-2

Error in 3GPP specification implementation in Exynos baseband prior to SMR Apr-2023 Release 1 allows incorrect handling of unencrypted message.

CVSS

4.6 MEDIUM

EPSS

0.08% (top 77.20%)

CWE

—

Published

2025-09-03T05:16:59.490Z

Last modified

2025-09-03T15:44:06.491Z

CVSS vector

CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

01What is this vulnerability?

Error in 3GPP specification implementation in Exynos baseband prior to SMR Apr-2023 Release 1 allows incorrect handling of unencrypted message.

Vendor	Product	Versions
Samsung Mobile	Samsung Mobile Devices	SMR Apr-2023 Release in Select devices using Exynos chipsets

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

security.samsungmobile.com — https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=04

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