How severe is CVE-2018-20335?

CVE-2018-20335 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 none, and availability high.

Is CVE-2018-20335 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20335?

CVE-2018-20335 affects Asus Asuswrt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20335?

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-2018-20335 published?

CVE-2018-20335 was published on 2020-03-20 and last updated on 2026-06-17.

CVE-2018-20335

CVE-2018-20335 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
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 trigger a DoS of the httpd service via the /APP_Installation.asp?= URI.

Frequently asked questions

What is CVE-2018-20335?: An issue was discovered in ASUSWRT 3.0.0.4.384.20308. An unauthenticated user can trigger a DoS of the httpd service via the /APP_Installation.asp?= URI.
How severe is CVE-2018-20335?: CVE-2018-20335 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 none, and availability high.
Is CVE-2018-20335 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20335?: CVE-2018-20335 affects Asus Asuswrt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20335?: 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-2018-20335 published?: CVE-2018-20335 was published on 2020-03-20 and last updated on 2026-06-17.

References

https://starlabs.sg/advisories/18-20335/

Affected products (1)

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

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