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CVE-2025-21043

Samsung Mobile Devices Out-of-Bounds Write

8.8 HIGHActively exploited (CISA KEV)EPSS 2.14%
  1. Published12 Sept 2025
  2. Added to CISA KEV2 Oct 2025
  3. Remediation due23 Oct 2025
Actively exploited (CISA KEV)

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

Added to KEV: 2 Oct 2025Federal remediation due: 23 Oct 2025

Description

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

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Samsung Android13.0 · 14.0 · 15.0 · 16.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-21043 being actively exploited?

Yes. CVE-2025-21043 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2 Oct 2025.

How severe is CVE-2025-21043?

CVE-2025-21043 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 2.14% probability of exploitation.

Which products are affected by CVE-2025-21043?

Affected products include Samsung Android.

How do I fix CVE-2025-21043?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-21043 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.