CVE-2026-24721: A NULL pointer dereference vulnerability has been reported to affect File Station 5

Q: How do I fix CVE-2026-24721?

file station: upgrade to 5.5.6.5243. Exact commands for each OS are on this page.

Q: Is CVE-2026-24721 being exploited?

CVE-2026-24721 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-24721 affect?

CVE-2026-24721 affects file station. Severity is medium (CVSS 6.5). A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the v

Q: How urgent is CVE-2026-24721?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-24721 is a medium-severity flaw (CVSS 6.5) affecting file station. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5243 and later

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-476
Published	2026-10-15
Last modified	2026-10-16

Publisher (CNA): QNAP Systems, Inc. · Vendor: qnap

Last updated 2026-10-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-15 07:17 UTCPublished CVE record published
2026-10-16 17:18 UTCUpdated Record last modified

qnap file station UPGRADE

Affected: < 5.5.6.5243

Fixed in: 5.5.6.5243

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy file-station || rpm -q file-station || file-station --version

2. UPGRADE to 5.5.6.5243 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade file-station

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade file-station

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2026-24721?

file station: upgrade to 5.5.6.5243. Exact commands for each OS are on this page.

Is CVE-2026-24721 being exploited?

CVE-2026-24721 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-2026-24721 affect?

CVE-2026-24721 affects file station. Severity is medium (CVSS 6.5). A NULL pointer dereference vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the v

How urgent is CVE-2026-24721?

Priority 28/100. No elevated risk signals yet.

Software pages

QNAP vulnerabilities

Related CVEs

CVE-2026-24722 MEDIUM 6.5 UPGRADE A NULL pointer dereference vulnerability has been reported to affect File Station 5
CVE-2026-24723 MEDIUM 6.5 UPGRADE A NULL pointer dereference vulnerability has been reported to affect File Station 5

References

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