Quick answers
- Is CVE-2026-21110 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-21110 being exploited in the wild.
- How severe is CVE-2026-21110?
- Informational severity, published 9 September 2026.
- Which products and versions are affected?
- Samsung One UI prior to 8.5.
- Is there a fix for CVE-2026-21110?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-21110 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-21110?
- Check whether you run Samsung One UI at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This vulnerability is an out-of-bounds write flaw in libsavscmn.so, a shared library component in Samsung One UI prior to version 8.5. The root cause appears to be insufficient input validation or buffer boundary checking in the vulnerable component. The attack requires local access to the device; a local attacker can craft specific input to trigger the out-of-bounds write, potentially achieving arbitrary code execution with the privileges of the affected process. The fix is available in One UI 8.5 and later versions, which adds proper input validation to prevent the out-of-bounds write condition.
Affected products
- Samsung One UI prior to 8.5
Timeline
- 2026-09-09: disclosed