⚠ Actively exploited
Added to CISA KEV on 2025-11-10. Federal agencies required to patch by 2025-12-01. Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable..

CVE-2025-21042 — Out-of-bounds Write in Samsung Android

CWE-787 — Out-of-bounds Write10 documents8 sources
Severity
9.8CRITICALNVD
CNA8.8VulnCheck8.8
EPSS
1.6%
top 18.09%
CISA KEV
KEV
Added 2025-11-10
Due 2025-12-01
Exploit
No known exploits
Affected products
1
Samsung Android
Timeline
PublishedSep 12
KEV addedNov 10
KEV dueDec 1
CISA Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages1 packages

▶NVDsamsung/android13.0, 14.0, 15.0+2

🔴Vulnerability Details

3
CVEList
CVE-2025-21042: Out-of-bounds write in libimagecodec↗2025-09-12
▶
GHSA
GHSA-jh44-w65q-8p7f: Out-of-bounds write in libimagecodec↗2025-09-12
▶
VulnCheck
Samsung Mobile Devices Out-of-Bounds Write Vulnerability↗2025
▶

📋Vendor Advisories

1
CISA
Samsung Mobile Devices Out-of-Bounds Write Vulnerability↗2025-11-10
▶

🕵️Threat Intelligence

3
Bleepingcomputer
CISA orders feds to patch Samsung zero-day used in spyware attacks↗2025-11-10
▶
Unit42
LANDFALL: New Commercial-Grade Android Spyware in Exploit Chain Targeting Samsung Devices↗2025-11-07
▶
Unit42
LANDFALL: New Commercial-Grade Android Spyware in Exploit Chain Targeting Samsung Devices↗2025-11-07
▶
CVE-2025-21042 — Out-of-bounds Write in Samsung Android | cvebase