How severe is CVE-2025-33036?

CVE-2025-33036 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-33036 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-33036?

CVE-2025-33036 affects Qnap Qsync Central. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-33036?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-33036 have an EU (EUVD) identifier?

Yes. CVE-2025-33036 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27835.

When was CVE-2025-33036 published?

CVE-2025-33036 was published on 2025-08-29 and last updated on 2026-06-17.

CVE-2025-33036

CVE-2025-33036 is a medium-severity vulnerability in Qnap Qsync Central with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 7.2
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-27835
Weakness: CWE-22
Affected product: Qnap Qsync Central
Published: 2025-08-29
Last modified: 2026-06-17

Description

A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: Qsync Central 4.5.0.7 ( 2025/04/23 ) and later

Frequently asked questions

What is CVE-2025-33036?: A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: Qsync Central 4.5.0.7 ( 2025/04/23 ) and later
How severe is CVE-2025-33036?: CVE-2025-33036 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-33036 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-33036?: CVE-2025-33036 affects Qnap Qsync Central. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-33036?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-33036 have an EU (EUVD) identifier?: Yes. CVE-2025-33036 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-27835.
When was CVE-2025-33036 published?: CVE-2025-33036 was published on 2025-08-29 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-25-22

Affected products (1)

cpe:2.3:a:qnap:qsync_central:*:*:*:*:*:*:*:*

More vulnerabilities in Qnap Qsync Central

CVE-2025-30276 — High (CVSS 8.8): An out-of-bounds write vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user…
CVE-2025-54153 — High (CVSS 8.8): An SQL injection vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account,…
CVE-2025-53595 — High (CVSS 8.8): An SQL injection vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account,…
CVE-2025-44014 — High (CVSS 8.8): An out-of-bounds write vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user…
CVE-2025-30278 — High (CVSS 8.8): An improper certificate validation vulnerability has been reported to affect Qsync Central. If a remote attacker gains…
CVE-2025-30277 — High (CVSS 8.8): An improper certificate validation vulnerability has been reported to affect Qsync Central. If a remote attacker gains…

All CVEs affecting Qnap Qsync Central →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →