Samsung Devices up to SMR Aug-2026 Release MPEG4 codec libsavsvc.so input validation

Summaryinfo

A vulnerability labeled as very critical has been found in Samsung Devices. This affects an unknown function of the file libsavsvc.so of the component MPEG4 codec. Such manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2026-21071. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Samsung Devices. Affected by this issue is an unknown part of the file libsavsvc.so of the component MPEG4 codec. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Improper input validation in MPEG4 codec in libsavsvc.so prior to SMR Aug-2026 Release 1 allows local attackers to write out-of-bounds memory.

The advisory is available at security.samsungmobile.com. This vulnerability is handled as CVE-2026-21071 since 12/11/2025. The exploitation is known to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/10/2026).

Upgrading to version SMR Aug-2026 Release 1 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Samsung

Name

• Devices

Version

• 4.1.01.0
• 7
• 8
• 9.0
• 10.0
• 11.0
• 2017-11-03
• 2020-04-02
• Go(8.1)
• Go(9.0)
• L
• L(5.1)
• L(5.x)
• M
• M(6.0)
• M(6.x)
• N
• N(7.0)
• N(7.1)
• N(7.x)
• O(8.0)
• O(8.1)
• O(8.X)
• O(8.x)
• P(9.0)
• P(9.x)
• Q(10.0)
• Q(10.x)
• R(11.0)
• SMR Aug-2026 Release

License

• commercial

Website

• Vendor: https://www.samsung.com/

CPE 2.3info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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