Quick answers
- Is CVE-2026-24721 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-24721 being exploited in the wild.
- How severe is CVE-2026-24721?
- Medium severity, with a CVSS score of 6.5, published 15 October 2026.
- Which products and versions are affected?
- QNAP File Station 5 before 5.5.6.5243.
- Is there a fix for CVE-2026-24721?
- Yes: fixed in File Station 5 5.5.6.5243 and later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-24721 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-24721?
- Check whether you run QNAP File Station or QNAP File Station 5 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: File Station 5 5.5.6.5243 and later
Technical details
A NULL pointer dereference in File Station 5 allows an authenticated remote attacker to trigger a denial-of-service condition. The vulnerability requires prior user account access to exploit. No active exploitation in the wild has been reported.
Affected products
- QNAP File Station 5 before 5.5.6.5243
Timeline
- 2026-10-15: disclosed