Quick answers
- Is CVE-2026-21157 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-21157 being exploited in the wild.
- How severe is CVE-2026-21157?
- Informational severity, published 29 October 2026.
- Which products and versions are affected?
- Samsung Bixby prior to 4.0.85.6.
- Is there a fix for CVE-2026-21157?
- Yes: fixed in 4.0.85.6. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-21157 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-21157?
- Check whether you run Samsung Bixby 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.
How to fix
- Fixed in: 4.0.85.6
Technical details
The vulnerability is an improper input validation flaw in Samsung Bixby's activity-launching functionality that allows privileged local attackers to launch arbitrary activities. The attack vector requires local access and elevated privileges on the device. No CVSS score was assigned, consistent with the "info" severity classification.
Affected products
- Samsung Bixby prior to 4.0.85.6
Timeline
- 2026-10-29: disclosed