Samsung Devices libimagecodec.quram.so out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Samsung Devices. This issue affects some unknown processing of the file libimagecodec.quram.so. Performing a manipulation results in out-of-bounds write. This vulnerability is known as CVE-2025-21043. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Samsung Devices (affected version not known). It has been classified as critical. This affects some unknown functionality of the file libimagecodec.quram.so. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Out-of-bounds write in libimagecodec.quram.so prior to SMR Sep-2025 Release 1 allows remote attackers to execute arbitrary code.

The advisory is shared at security.samsungmobile.com. This vulnerability is uniquely identified as CVE-2025-21043 since 11/06/2024. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a exploit are known.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 10/02/2025 with a due date of 10/23/2025:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at Zero-Day.cz (1031) and EUVD (EUVD-2025-29028). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 9.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 8.8
CNA Vector (SamsungMobile): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Attacked

EPSS Score: 🔒
EPSS Percentile: 🔒

KEV Added: 🔒
KEV Due: 🔒
KEV Remediation: 🔒
KEV Ransomware: 🔒
KEV Notice: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Zero-Day.cz: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/06/2024 CVE reserved
09/12/2025 +309 days Advisory disclosed
09/12/2025 +0 days VulDB entry created
03/22/2026 +191 days VulDB entry last update

Sourcesinfo

Vendor: samsung.com

Advisory: security.samsungmobile.com
Status: Confirmed

CVE: CVE-2025-21043 (🔒)
GCVE (CVE): GCVE-0-2025-21043
GCVE (VulDB): GCVE-100-323745
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/12/2025 10:11
Updated: 03/22/2026 12:26
Changes: 09/12/2025 10:11 (62), 09/12/2025 14:08 (1), 10/02/2025 19:54 (13), 10/03/2025 07:21 (11), 03/22/2026 12:26 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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