CVE intelligence and bounded remediation

CVE-2023-49927 — Samsung Exynos 9820 Firmware security vulnerability

Medium CVSS 5.3

An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, Exynos 990, Exynos 850, Exynos 1080, Exynos 2100, Exynos 2200, Exynos 1280, Exynos 1380, Exynos 1330, Exynos 9110, Exynos W920, Exynos Modem 5123, Exynos Modem 5300. The baseband software does not properly check format types specified by the RRC. This can lead to a lack of encryption.

Severity
Medium
CVSS
5.3 (3.1)
Published
2024-06-05
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-311, CWE-331

Affected products

  • samsung / exynos_9820_firmware
  • samsung / exynos_9825_firmware
  • samsung / exynos_980_firmware
  • samsung / exynos_990_firmware
  • samsung / exynos_850_firmware
  • samsung / exynos_1080_firmware

Showing 6 representative product identities from 13 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cryptography, certificate, signature, and channel validation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

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