How severe is CVE-2018-12309?

CVE-2018-12309 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-12309 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12309?

CVE-2018-12309 affects Asustor Data Master. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12309?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-12309 published?

CVE-2018-12309 was published on 2018-12-04 and last updated on 2026-06-17.

CVE-2018-12309

CVE-2018-12309 is a high-severity vulnerability in Asustor Data Master with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Asustor Data Master
Published: 2018-12-04
Last modified: 2026-06-17

Description

Directory Traversal in upload.cgi in ASUSTOR ADM version 3.1.1 allows attackers to upload files to arbitrary locations by modifying the "path" URL parameter. NOTE: the "filename" POST parameter is covered by CVE-2018-11345.

Frequently asked questions

What is CVE-2018-12309?: Directory Traversal in upload.cgi in ASUSTOR ADM version 3.1.1 allows attackers to upload files to arbitrary locations by modifying the "path" URL parameter. NOTE: the "filename" POST parameter is covered by CVE-2018-11345.
How severe is CVE-2018-12309?: CVE-2018-12309 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-12309 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12309?: CVE-2018-12309 affects Asustor Data Master. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12309?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-12309 published?: CVE-2018-12309 was published on 2018-12-04 and last updated on 2026-06-17.

References

https://blog.securityevaluators.com/over-a-dozen-vulnerabilities-discovered-in-asustor-as-602t-8dd5832a82cc

Affected products (1)

cpe:2.3:o:asustor:data_master:3.1.1:*:*:*:*:*:*:*

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