Security Vulnerability Report
中文
CVE-2026-21018 CVSS 6.7 MEDIUM

CVE-2026-21018

Published: 2026-05-13 06:16:13
Last Modified: 2026-05-13 17:31:49

Description

Out-of-bounds write in SveService prior to SMR May-2026 Release 1 allows local privileged attackers to execute arbitrary code.

CVSS Details

CVSS Score
6.7
Severity
MEDIUM
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:o:samsung:android:14.0:-:*:*:*:*:*:* - VULNERABLE
cpe:2.3:o:samsung:android:14.0:smr-apr-2022-r1:*:*:*:*:*:* - VULNERABLE
cpe:2.3:o:samsung:android:14.0:smr-apr-2023-r1:*:*:*:*:*:* - VULNERABLE
cpe:2.3:o:samsung:android:14.0:smr-apr-2024-r1:*:*:*:*:*:* - VULNERABLE
cpe:2.3:o:samsung:android:14.0:smr-apr-2025-r1:*:*:*:*:*:* - VULNERABLE
Samsung Mobile Devices (SveService) < SMR May-2026 Release 1

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// Conceptual PoC for Out-of-Bounds Write in SveService // Note: Actual exploitation requires specific IPC interface interaction. #include <iostream> #include <cstring> // Simulated vulnerable class structure class VulnerableService { public: // Simulates the vulnerable function handling a buffer void handleRequest(char* input, int size) { char internal_buffer[64]; // Fixed size buffer // VULNERABILITY: The loop copies data without checking if 'size' exceeds buffer size. // This leads to Out-of-Bounds Write. for (int i = 0; i < size; i++) { internal_buffer[i] = input[i]; } std::cout << "Request processed." << std::endl; } }; int main() { VulnerableService service; // Payload larger than the internal buffer (64 bytes) char malicious_payload[100]; memset(malicious_payload, 0x41, sizeof(malicious_payload)); // Fill with 'A' // Trigger the vulnerability // In a real scenario, this would be an IPC call with crafted parameters service.handleRequest(malicious_payload, 100); return 0; }

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-21018", "sourceIdentifier": "[email protected]", "published": "2026-05-13T06:16:13.270", "lastModified": "2026-05-13T17:31:48.793", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out-of-bounds write in SveService prior to SMR May-2026 Release 1 allows local privileged attackers to execute arbitrary code."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/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", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 6.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:-:*:*:*:*:*:*", "matchCriteriaId": "3093F6FE-C562-4F62-97B7-CA0D2DDF9BBE"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-apr-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "9CBFF102-91A9-4BCC-BB43-912896BFCCEA"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-apr-2023-r1:*:*:*:*:*:*", "matchCriteriaId": "DAB2A0D7-8F4F-4128-AE09-D2658D793BF7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-apr-2024-r1:*:*:*:*:*:*", "matchCriteriaId": "6A89AE5B-4D1A-4ADA-B572-38B1FC4ED54C"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-apr-2025-r1:*:*:*:*:*:*", "matchCriteriaId": "3F58ACB0-BA2B-4AFE-91DC-32CBD70DFD73"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-apr-2026-r1:*:*:*:*:*:*", "matchCriteriaId": "EE562A78-DCDD-452C-A5CD-11DAD84EFE02"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-aug-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "401980A7-E64A-4773-83EB-C93B50AE0F73"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-aug-2023-r1:*:*:*:*:*:*", "matchCriteriaId": "CC6E2FC7-2BAF-4C7B-9E0F-D9F844041A35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-aug-2024-r1:*:*:*:*:*:*", "matchCriteriaId": "6E12AB0B-728A-4478-B237-78CBAA2A44C5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-aug-2025-r1:*:*:*:*:*:*", "matchCriteriaId": "26EEF3EC-643F-4A39-8F4C-11F0F534B589"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-dec-2021-r1:*:*:*:*:*:*", "matchCriteriaId": "0501033A-0D51-41E8-91A9-E72B6EE3F78D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-dec-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "2A901EFE-90BA-474C-88D2-8A3E7D99C0E7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-dec-2023-r1:*:*:*:*:*:*", "matchCriteriaId": "DF7B3213-520A-49F0-A183-C73A37A56854"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-dec-2024-r1:*:*:*:*:*:*", "matchCriteriaId": "9AB6398C-6A3E-4146-9A5C-595BE36047BA"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-dec-2025-r1:*:*:*:*:*:*", "matchCriteriaId": "00EE2529-013A-4F73-8D86-BD1AD613028D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:14.0:smr-feb-2 ... (truncated)