How severe is CVE-2018-20333?

CVE-2018-20333 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 high, integrity none, and availability none.

Is CVE-2018-20333 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20333?

CVE-2018-20333 affects Asus Asuswrt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20333?

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-2018-20333 published?

CVE-2018-20333 was published on 2020-03-20 and last updated on 2026-06-17.

CVE-2018-20333

CVE-2018-20333 is a high-severity vulnerability in Asus Asuswrt 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Asus Asuswrt
Published: 2020-03-20
Last modified: 2026-06-17

Description

An issue was discovered in ASUSWRT 3.0.0.4.384.20308. An unauthenticated user can request /update_applist.asp to see if a USB device is attached to the router and if there are apps installed on the router.

Frequently asked questions

What is CVE-2018-20333?: An issue was discovered in ASUSWRT 3.0.0.4.384.20308. An unauthenticated user can request /update_applist.asp to see if a USB device is attached to the router and if there are apps installed on the router.
How severe is CVE-2018-20333?: CVE-2018-20333 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 high, integrity none, and availability none.
Is CVE-2018-20333 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20333?: CVE-2018-20333 affects Asus Asuswrt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20333?: 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-2018-20333 published?: CVE-2018-20333 was published on 2020-03-20 and last updated on 2026-06-17.

References

https://starlabs.sg/advisories/18-20333/

Affected products (1)

cpe:2.3:o:asus:asuswrt:3.0.0.4.384.20308:*:*:*:*:*:*:*

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