CVE-2025-58476

Description

Out-of-bounds read vulnerability in bootloader prior to SMR Dec-2025 Release 1 allows physical attackers to access out-of-bounds memory.

CVSS Details

CVSS Score

4.2

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Configurations (Affected Products)

cpe:2.3:o:samsung:android:13.0:-:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:samsung:android:13.0:smr-apr-2022-r1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:samsung:android:13.0:smr-apr-2023-r1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:samsung:android:13.0:smr-apr-2024-r1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:samsung:android:13.0:smr-apr-2025-r1:*:*:*:*:*:* - VULNERABLE

Samsung Bootloader < SMR Dec-2025 Release 1

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

#!/usr/bin/env python3
# CVE-2025-58476 PoC - Samsung Bootloader Out-of-Bounds Read
# Physical access required

import sys
import struct

def cve_2025_58476_poc():
    """
    PoC for Samsung Bootloader Out-of-Bounds Read Vulnerability
    This demonstrates the vulnerability in the bootloader memory access
    
    Note: This is a conceptual PoC. Actual exploitation requires:
    - Physical access to Samsung device
    - USB debugging or fastboot mode enabled
    - Custom bootloader exploitation toolkit
    """
    
    print("="*60)
    print("CVE-2025-58476 - Samsung Bootloader OOB Read PoC")
    print("="*60)
    print("\n[!] This PoC demonstrates the vulnerability concept")
    print("[!] Physical access to target device is required")
    print("[!] Device must have USB debugging or fastboot enabled")
    print()
    
    # Vulnerability parameters
    vuln_info = {
        "cve_id": "CVE-2025-58476",
        "affected_component": "Samsung Bootloader",
        "vulnerability_type": "Out-of-bounds Read",
        "attack_vector": "Physical (AV:P)",
        "cvss_score": 4.2,
        "severity": "MEDIUM"
    }
    
    print("[*] Vulnerability Information:")
    for key, value in vuln_info.items():
        print(f"    {key}: {value}")
    
    print("\n[*] Exploitation Steps:")
    steps = [
        "1. Connect to Samsung device via USB in fastboot/recovery mode",
        "2. Send crafted memory read commands to bootloader",
        "3. Trigger out-of-bounds memory access at boundary addresses",
        "4. Capture leaked memory contents (keys, credentials, etc.)",
        "5. Analyze extracted data for further exploitation"
    ]
    
    for step in steps:
        print(f"    {step}")
    
    print("\n[*] Example Fastboot Command Structure:")
    print("    fastboot oem memread <boundary_address> <length>")
    print("    fastboot boot custom_exploit_kernel.img")
    
    print("\n[*] Expected Memory Regions to Leak:")
    regions = [
        "- Kernel command line arguments",
        "- Boot partition memory mappings",
        "- Hardware-backed key storage references",
        "- Device-specific cryptographic materials"
    ]
    for region in regions:
        print(f"    {region}")
    
    print("\n[*] Mitigation:")
    print("    - Update to SMR Dec-2025 Release 1 or later")
    print("    - Disable USB debugging when not in use")
    print("    - Restrict physical access to devices")
    
    print("\n" + "="*60)
    
    return True

if __name__ == "__main__":
    cve_2025_58476_poc()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-58476
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-58476
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-58476/
[4] VulDB https://vuldb.com/cve/CVE-2025-58476
[5] https://security.samsungmobile.com/securityUpdate.smsb?year=2025&month=12

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-58476", "sourceIdentifier": "[email protected]", "published": "2025-12-02T02:15:47.253", "lastModified": "2025-12-05T19:13:16.663", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out-of-bounds read vulnerability in bootloader prior to SMR Dec-2025 Release 1 allows physical attackers to access out-of-bounds memory."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 4.2, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 0.5, "impactScore": 3.6}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 4.6, "baseSeverity": "MEDIUM", "attackVector": "PHYSICAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 0.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-125"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:-:*:*:*:*:*:*", "matchCriteriaId": "A123EDB1-3048-44B0-8D4D-39A2B24B5F6B"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-apr-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "BDE4D65E-8F9B-4810-AED6-95564A97D741"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-apr-2023-r1:*:*:*:*:*:*", "matchCriteriaId": "70825981-F895-4BFD-9B6E-92BFF0D67023"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-apr-2024-r1:*:*:*:*:*:*", "matchCriteriaId": "A5E68B7B-BA08-4E8C-B60A-B3836C6986BC"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-apr-2025-r1:*:*:*:*:*:*", "matchCriteriaId": "AC42E785-02BF-4F27-B5CF-49572A2DBC8E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-aug-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "0AF1EDA0-2712-4C3C-8D8A-89E154BB63DF"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-aug-2023-r1:*:*:*:*:*:*", "matchCriteriaId": "88DC0A82-CAF3-4E88-8A4D-8AF79D0C226D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-aug-2024-r1:*:*:*:*:*:*", "matchCriteriaId": "6239D93F-CA0E-4120-96A1-FB63276EAEE8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-aug-2025-r1:*:*:*:*:*:*", "matchCriteriaId": "25F19D02-1FFC-48AF-9CB8-063C459E7A4B"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-dec-2021-r1:*:*:*:*:*:*", "matchCriteriaId": "CD382E2D-0B51-4908-989A-88E083FC85BF"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-dec-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "299284DA-85AB-4162-B858-E67E5C6C14F7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-dec-2023-r1:*:*:*:*:*:*", "matchCriteriaId": "38B7AB56-AB65-4557-A91C-40CA2FD12351"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-dec-2024-r1:*:*:*:*:*:*", "matchCriteriaId": "858B0736-2272-4D5A-A77F-47023D21F7D0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-feb-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "61D507C0-086B-4139-A560-126964DFA579"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-feb-2023-r1:*:*:*:*:*:*", "matchCriteriaId": "D98F307E-3B01-4C17-86E5-1C6299919417"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-feb-2024-r1:*:*:*:*:*:*", "matchCriteriaId": "952CA843-7CF0-4424-BDA4-3F2A93E077B6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-feb-2025-r1:*:*:*:*:*:*", "matchCriteriaId": "39F64BAA-2E49-4919-A940-219391383D5E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-jan-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "57B125ED-D939-4CBC-9E96-BBCF02402A69"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-jan-2023-r1:*:*:*:*:*:*", "matchCriteriaId": "7D7DA96D-9C25-4DDA-A6BF-D998AC346B89"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-jan-2024-r1:*:*:*:*:*:*", "matchCriteriaId": "07AC19C6-D245-4C3A-90CC-A931A901EA0A"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-jan-2025-r1:*:*:*:*:*:*", "matchCriteriaId": "FDA1685E-D101-46F6-8857-7F0894E07748"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsung:android:13.0:smr-jul-2022-r1:*:*:*:*:*:*", "matchCriteriaId": "DF85AA7B-E1C7-4946-92B4-E4D545CAACDF"}, {"vulnerable": true, "criteria": "cpe:2.3:o:samsun ... 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