How severe is CVE-2018-20166?

CVE-2018-20166 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-2018-20166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20166?

CVE-2018-20166 affects Rukovoditel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20166?

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-2018-20166 published?

CVE-2018-20166 was published on 2019-01-02 and last updated on 2026-06-17.

CVE-2018-20166

CVE-2018-20166 is a high-severity vulnerability in Rukovoditel 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: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Rukovoditel
Published: 2019-01-02
Last modified: 2026-06-17

Description

A file-upload vulnerability exists in Rukovoditel 2.3.1. index.php?module=configuration/save allows the user to upload a background image, and mishandles extension checking. It accepts uploads of PHP content if the first few characters match GIF data, and the filename ends in ".php" with mixed case, such as the .pHp extension.

Frequently asked questions

What is CVE-2018-20166?: A file-upload vulnerability exists in Rukovoditel 2.3.1. index.php?module=configuration/save allows the user to upload a background image, and mishandles extension checking. It accepts uploads of PHP content if the first few characters match GIF data, and the filename ends in ".php" with mixed case, such as the .pHp extension.
How severe is CVE-2018-20166?: CVE-2018-20166 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-2018-20166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20166?: CVE-2018-20166 affects Rukovoditel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20166?: 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-2018-20166 published?: CVE-2018-20166 was published on 2019-01-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:rukovoditel:rukovoditel:2.3.1:*:*:*:*:*:*:*

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