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CVE-2026-21072: CWE-20 Improper input validation in Samsung Mobile Samsung Mobile Devices

0
Medium
VulnerabilityCVE-2026-21072cvecve-2026-21072cwe-20
Published: 08/10/2026 (08/10/2026, 07:42:09 UTC)
Source: CVE Database V5
Vendor/Project: Samsung Mobile
Product: Samsung Mobile Devices

Description

CVE-2026-21072 is a medium severity vulnerability in Samsung Mobile Devices involving improper input validation in the VC1 codec component (libsavsvc.so). This flaw allows local attackers to write out-of-bounds memory, potentially leading to memory corruption. The issue affects versions prior to the SMR Aug-2026 Release 1. No official patch or remediation guidance is currently available from the vendor.

CVSS v4.0

Score 5.1medium

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
Low
Subsq. Integrity
Low
Subsq. Availability
Low
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

Affected software

Samsung Mobile

Samsung Mobile Devices

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/17/2026, 15:36:53 UTC

Technical Analysis

This vulnerability arises from improper input validation in the VC1 codec within libsavsvc.so on Samsung Mobile Devices. Specifically, it allows local attackers to perform out-of-bounds memory writes. The vulnerability is identified as CWE-20 and affects devices running software versions before the SMR Aug-2026 Release 1. The CVSS 4.0 base score is 5.1, indicating medium severity, with attack vector local and low privileges required. No known exploits are reported in the wild, and no vendor advisory or patch information is currently provided.

Potential Impact

Successful exploitation could allow a local attacker to write out-of-bounds memory, which may lead to memory corruption and potentially impact device stability or security. However, the attack requires local access and low privileges, limiting the scope of impact. There are no known active exploits in the wild at this time.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided, users should monitor Samsung Mobile advisories for updates. No specific mitigations are currently documented.

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Technical Details

Data Version
5.2
Assigner Short Name
SamsungMobile
Date Reserved
2025-12-11T01:33:35.824Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6a798b48bf8831d53957fd54

Added to database: 08/10/2026, 08:26:48 UTC

Last enriched: 08/17/2026, 15:36:53 UTC

Last updated: 09/23/2026, 01:47:41 UTC

Views: 37

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