PatchTheCVECVE-2026-21107: Out-of-bounds write in Samsung Notes prior to version 4.4.45.5 allows local attackers to write out-of-bounds m
CVE-2026-21107 is a medium-severity flaw (CVSS 5.5) affecting notes. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Out-of-bounds write in Samsung Notes prior to version 4.4.45.5 allows local attackers to write out-of-bounds memory.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.1% (top 97%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2026-09-09 |
| Last modified | 2026-09-23 |
Last updated 2026-09-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-21107?
notes: upgrade to 4.4.45.5. Exact commands for each OS are on this page.
Is CVE-2026-21107 being exploited?
CVE-2026-21107 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-21107 affect?
CVE-2026-21107 affects notes. Severity is medium (CVSS 5.5). Out-of-bounds write in Samsung Notes prior to version 4.4.45.5 allows local attackers to write out-of-bounds memory.
How urgent is CVE-2026-21107?
Priority 20/100. No elevated risk signals yet.