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Samsung Mobile Devices CVE-2026-21095

| EUVDEUVD-2026-74636 CRITICAL
Heap-based Buffer Overflow (CWE-122)
2026-09-09 SamsungMobile GHSA-fgp3-964j-h4rh
9.2
CVSS 4.0 · Vendor: SamsungMobile
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Vendor (SamsungMobile) PRIMARY
9.2 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.1 HIGH

Network-reachable via delivered image with no auth or explicit interaction, but the required crafted-DNG precondition (AT:P in 4.0) maps to AC:H in 3.1; full code-execution impact gives C/I/A:H.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (SamsungMobile).

CVSS VectorVendor: SamsungMobile

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Sep 09, 2026 - 08:17 vuln.today
CVE Published
Sep 09, 2026 - 04:47 cve.org
CRITICAL 9.2

DescriptionCVE.org

Heap-based buffer overflow in DNG decoder of libimagecodec.quram.so prior to SMR Sep-2026 Release 1 allows remote attackers to execute arbitrary code.

AnalysisAI

Remote code execution in the DNG (Adobe Digital Negative) image decoder within Samsung's Quram imaging library (libimagecodec.quram.so) affects Samsung mobile devices on Android 14, 15, 16, and 17 prior to the SMR Sep-2026 Release 1 patch. A crafted DNG image parsed by the library triggers a heap-based buffer overflow, letting a remote attacker run arbitrary code in the context of the process handling the image. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires that a Samsung device running an affected Android 14-17 build (pre-SMR Sep-2026 Release 1) parse an attacker-supplied DNG image through libimagecodec.quram.so - i.e., the malicious DNG must be delivered and processed via a media pathway (messaging preview/thumbnail, gallery, or media scan). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H, base 9.2) rates this network-reachable, unauthenticated, no user interaction, with full confidentiality/integrity/availability impact - the AT:P (Attack Requirements: Present) qualifier is the key nuance, signaling that a specific precondition (the victim's device must receive and process a malicious DNG through a media pathway) is required rather than being freely repeatable against any endpoint. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Install the Samsung SMR Sep-2026 Release 1 firmware update (Vendor-released patch: SMR Sep-2026 Release 1) via Settings → Software update → Download and install, once it is available for the specific model - this is the definitive fix and the version cited in the Samsung bulletin (https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=09). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify and inventory all Samsung devices running Android 14-17 within your organization and communicate the vulnerability to users and BYOD administrators. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-21095 vulnerability details – vuln.today

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