Samsung Exynos Exynos DRM HDR Driver toctou

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.59+

Summaryinfo

A vulnerability was found in Samsung Exynos. It has been classified as critical. Affected by this vulnerability is an unknown functionality of the component Exynos DRM HDR Driver. Performing a manipulation results in toctou. This vulnerability is cataloged as CVE-2026-23786. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability was found in Samsung Exynos (unknown version). It has been classified as critical. This affects an unknown code block of the component Exynos DRM HDR Driver. The manipulation with an unknown input leads to a toctou vulnerability. CWE is classifying the issue as CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at semiconductor.samsung.com. This vulnerability is uniquely identified as CVE-2026-23786 since 01/16/2026. The exploitability is told to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 2.8
CNA Vector (MITRE): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Toctou
CWE: CWE-367 / CWE-362
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/16/2026 CVE reserved
09/14/2026 +240 days Advisory disclosed
09/14/2026 +0 days VulDB entry created
09/14/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: samsung.com

Advisory: semiconductor.samsung.com
Status: Not defined

CVE: CVE-2026-23786 (🔒)
GCVE (CVE): GCVE-0-2026-23786
GCVE (VulDB): GCVE-100-403359

Entryinfo

Created: 09/14/2026 02:53
Changes: 09/14/2026 02:53 (60)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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