Threats / Samsung / CVE-2025-21042
CVE-2025-21042
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Samsung Mobile Devices vulnerability
Samsung mobile devices contain an out-of-bounds write vulnerability in libimagecodec.quram.so that could allow remote attackers to execute arbitrary code.
Verdict
Today item — known-exploited.
Out-of-bounds write in image codec library enables remote code execution on Samsung mobile devices. Active exploitation observed. Affects confidentiality, integrity, and availability of affected systems.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Public proof-of-concept exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
8 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-11-10).
Probability (EPSS)
EPSS 0.11606 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Samsung, Mobile Devices. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-787 Out-of-bounds Write — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious image file designed to trigger an out-of-bounds write in the image codec processing routine.
Business
Attackers gain arbitrary code execution capability on user devices, enabling data theft, malware installation, or device compromise.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I deliver the malicious image through email, messaging apps, web browsing, or social engineering to reach target users.
Business
User trust in Samsung devices and mobile platforms is undermined; customer support costs increase due to incident response.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute arbitrary code with the privileges of the image codec process to establish persistence or lateral movement.
Business
Enterprise deployments of Samsung devices face elevated security risk; IT teams must prioritize patching and device management.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by SamsungMobileCNA
Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.