How severe is CVE-2018-11345?

CVE-2018-11345 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11345 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11345?

CVE-2018-11345 affects Asustor As6202t Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11345?

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-2018-11345 published?

CVE-2018-11345 was published on 2018-05-22 and last updated on 2026-06-17.

CVE-2018-11345

CVE-2018-11345 is a high-severity vulnerability in Asustor As6202t Firmware with a CVSS 3.x base score of 8.8. 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-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Asustor As6202t Firmware
Published: 2018-05-22
Last modified: 2026-06-17

Description

An unrestricted file upload vulnerability in upload.cgi in ASUSTOR AS6202T ADM 3.1.0.RFQ3 allows attackers to upload supplied data via the POST parameter filename. This can be used to place attacker controlled code on the file system that can then be executed. Further, the filename parameter is vulnerable to path traversal and allows the attacker to place the file anywhere on the system.

Frequently asked questions

What is CVE-2018-11345?: An unrestricted file upload vulnerability in upload.cgi in ASUSTOR AS6202T ADM 3.1.0.RFQ3 allows attackers to upload supplied data via the POST parameter filename. This can be used to place attacker controlled code on the file system that can then be executed. Further, the filename parameter is vulnerable to path traversal and allows the attacker to place the file anywhere on the system.
How severe is CVE-2018-11345?: CVE-2018-11345 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11345 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11345?: CVE-2018-11345 affects Asustor As6202t Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11345?: 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-2018-11345 published?: CVE-2018-11345 was published on 2018-05-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:asustor:as6202t_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Asustor As6202t Firmware

CVE-2018-11341 — High (CVSS 7.2): Directory traversal in importuser.cgi in ASUSTOR AS6202T ADM 3.1.0.RFQ3 allows attackers to navigate the file system…
CVE-2018-11340 — High (CVSS 7.2): An unrestricted file upload vulnerability in importuser.cgi in ASUSTOR AS6202T ADM 3.1.0.RFQ3 allows attackers to…
CVE-2018-11344 — Medium (CVSS 6.5): A path traversal vulnerability in download.cgi in ASUSTOR AS6202T ADM 3.1.0.RFQ3 allows attackers to arbitrarily…
CVE-2018-11346 — Medium (CVSS 4.3): An insecure direct object reference vulnerability in download.cgi in ASUSTOR AS6202T ADM 3.1.0.RFQ3 allows the ability…
CVE-2018-11342 — Medium (CVSS 4.3): A path traversal vulnerability in fileExplorer.cgi in ASUSTOR AS6202T ADM 3.1.0.RFQ3 allows attackers to arbitrarily…

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