CVE-2026-21048
Out-of-bounds write in DNG parser permitting remote memory corruption and possible code execution.
Is CVE-2026-21048 being exploited?
Not confirmed. CVE-2026-21048 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 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-21048?
CVE-2026-21048 is rated High with a CVSS score of 8.3. 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-2026-21048?
Yes. A fix has been recorded for CVE-2026-21048. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-21048 affect?
CVE-2026-21048 affects libimagecodec.media.quram.so, Devices with SMR prior to Jul-2026 Release 1, Android-based devices using the vendor media codec. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-21048?
Apply SMR Jul-2026 Release 1; block/opening untrusted DNG files until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote OOB write via crafted DNG may cause memory corruption, crashes, or enable arbitrary code execution on affected devices.
Patch when possible