Cyber Resilience

CVE-2023-42483

Race Condition in Samsung Exynos 9820 Firmware

Race Condition
Published
13 December 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 6.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0015 4th percentile
Risk Priority 44 floored blend · peak EPSS

Summary

CVE-2023-42483 is a medium-severity Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367) vulnerability in Samsung Exynos 9820 Firmware. Its CVSS base score is 6.3 (Medium).

Operationally, ranked at the 4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

A TOCTOU race condition in Samsung Mobile Processor Exynos 9820, Exynos 980, Exynos 1080, Exynos 2100, Exynos 2200, Exynos 1280, and Exynos 1380 can cause unexpected termination of a system.

CWE(s)
CWE-367

Related Threats

CVEs Like This One

CVE-2024-27361Same product: Samsung Exynos 1080
CVE-2023-45864Same product: Samsung Exynos 1080
CVE-2023-40218Same product: Samsung Exynos 1280
CVE-2025-23098Same product: Samsung Exynos 1080
CVE-2025-23102Same product: Samsung Exynos 1080
CVE-2023-43122Same product: Samsung Exynos 1080
CVE-2023-37367Same product: Samsung Exynos 1080
CVE-2023-49927Same product: Samsung Exynos 1080
CVE-2023-36481Same product: Samsung Exynos 1080
CVE-2023-50803Same product: Samsung Exynos 1080

Affected Assets

samsung
exynos 9820 firmware
all versions
samsung
exynos 980 firmware
all versions
samsung
exynos 1080 firmware
all versions
samsung
exynos 2100 firmware
all versions
samsung
exynos 2200 firmware
all versions
samsung
exynos 1280 firmware
all versions
samsung
exynos 1380 firmware
all versions

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V15.4.2
  • V17.2.6

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AU-8 Time Stamps
addresses: CWE-367

Timestamps meeting UTC or offset standards help identify TOCTOU issues through precise chronological reconstruction of check/use operations.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly include coding standards and reviews that prevent TOCTOU race conditions.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.17 Clock synchronization none match
none

Reliable, synchronized time across systems narrows the exploitable window in which a resource state can change between a security check and its use.

References