RCE in Samsung's widely deployed mobile JPEG decoder could enable mass compromise of corporate mobile endpoints and consumer devices; high news/impact potential.
CVE-2026-21096
Heap overflow in Samsung JPEG decoder allows remote code execution on devices.
Is CVE-2026-21096 being exploited?
Not confirmed. CVE-2026-21096 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.46% probability of exploitation in the next 30 days.
How severe is CVE-2026-21096?
CVE-2026-21096 is rated Critical with a CVSS score of 9.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-21096?
Yes. A fix has been recorded for CVE-2026-21096. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-21096 affect?
CVE-2026-21096 affects libimagecodec.quram.so (JPEG decoder), Samsung mobile devices prior to SMR Sep-2026 Release 1, Android devices using Samsung OEM image codec. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-21096?
Install SMR Sep-2026 patch immediately; avoid opening untrusted JPEGs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution by processing a crafted JPEG, enabling full device compromise, data theft, or persistent malware.
Immediate action required