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Vulnerabilities

Vulnerability · CVE-2025-21043

Samsung Mobile Devices Out-of-Bounds Write Vulnerability

Published Sep 12, 2025 · catalog updated Oct 8, 2026 · Samsung Mobile Devices

Patch now

CVE-2025-21043 is in the CISA known-exploited catalog, due Oct 23, 2025. Confirm Samsung Mobile Devices against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
2.14%
Remediation
Remediation guidance
Affected products
cpe samsung/android · vendor Samsung Mobile Devices

Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so which allows remote attackers to execute arbitrary code.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe samsung/android13.0
  • vendor Samsung Mobile Devicesversion unspecified

How to fix CVE-2025-21043

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-21043 is in the CISA known-exploited catalog, due Oct 23, 2025. Confirm Samsung Mobile Devices against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with 13.0. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 2.14%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 12, 2025 · Catalog

    Detected

    Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so which allows remote attackers to execute arbitrary code.

  2. Oct 2, 2025 · CISA KEV

    Known exploited

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

  3. Oct 23, 2025 · CISA KEV

    Remediation due

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

  4. Oct 8, 2026 · Catalog

    Updated

    Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so which allows remote attackers to execute arbitrary code.

Sources

  • CISA KEVConfirmed exploitationCVE-2025-21043

    Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so which allows remote attackers to execute arbitrary code.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2025-21043

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-21043

    30-day exploitation probability 2.1%

    first.org
  • NIST NVDVulnerability recordCVE-2025-21043

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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2025-21043

    Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so which allows remote attackers to execute arbitrary code.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.