How severe is CVE-2018-0542?

CVE-2018-0542 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-2018-0542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0542?

CVE-2018-0542 affects Webproxy Project Webproxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-0542?

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-2018-0542 published?

CVE-2018-0542 was published on 2018-03-22 and last updated on 2026-06-17.

CVE-2018-0542

CVE-2018-0542 is a high-severity vulnerability in Webproxy Project Webproxy 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% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Webproxy Project Webproxy
Published: 2018-03-22
Last modified: 2026-06-17

Description

Directory traversal vulnerability in WebProxy version 1.7.8 allows an attacker to read arbitrary files via unspecified vectors.

Frequently asked questions

What is CVE-2018-0542?: Directory traversal vulnerability in WebProxy version 1.7.8 allows an attacker to read arbitrary files via unspecified vectors.
How severe is CVE-2018-0542?: CVE-2018-0542 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-2018-0542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0542?: CVE-2018-0542 affects Webproxy Project Webproxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-0542?: 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-2018-0542 published?: CVE-2018-0542 was published on 2018-03-22 and last updated on 2026-06-17.

References

https://jvn.jp/en/jp/JVN87226910/index.html

Affected products (1)

cpe:2.3:a:webproxy_project:webproxy:1.7.8:*:*:*:*:*:*:*

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