CVE-2026-23786: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition in Samsung Exynos 1280 firmware
An issue was discovered in DPU in Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600. A TOCTOU race condition in the Exynos DRM HDR Driver leads to a heap overflow, causing a kernel crash.
AI Analysis
Technical Summary
This vulnerability is a TOCTOU race condition (CWE-367) in the Exynos DRM HDR Driver across multiple Samsung Exynos mobile processor models. The race condition can result in a heap overflow, causing the kernel to crash. The CVSS 3.1 base score is 2.8, reflecting low severity with local attack vector, high attack complexity, low privileges required, no user interaction, and impact limited to availability. No known exploits are reported in the wild. Affected versions are all firmware versions up to and including 2025-12-24.
Potential Impact
The vulnerability can cause a kernel crash due to a heap overflow triggered by the TOCTOU race condition. There is no impact on confidentiality or integrity, only availability is affected. This could lead to denial of service on affected devices.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
CVE-2026-23786: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition in Samsung Exynos 1280 firmware
Description
An issue was discovered in DPU in Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600. A TOCTOU race condition in the Exynos DRM HDR Driver leads to a heap overflow, causing a kernel crash.
CVSS v3.1
Score 2.8low
Affected software
Samsung
Exynos 1280 firmware
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a TOCTOU race condition (CWE-367) in the Exynos DRM HDR Driver across multiple Samsung Exynos mobile processor models. The race condition can result in a heap overflow, causing the kernel to crash. The CVSS 3.1 base score is 2.8, reflecting low severity with local attack vector, high attack complexity, low privileges required, no user interaction, and impact limited to availability. No known exploits are reported in the wild. Affected versions are all firmware versions up to and including 2025-12-24.
Potential Impact
The vulnerability can cause a kernel crash due to a heap overflow triggered by the TOCTOU race condition. There is no impact on confidentiality or integrity, only availability is affected. This could lead to denial of service on affected devices.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-01-16T00:00:00.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa7478a55bf5e2cf54ed5d0
Added to database: 09/14/2026, 01:02:02 UTC
Last enriched: 09/14/2026, 01:16:46 UTC
Last updated: 09/14/2026, 02:03:25 UTC
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.