How severe is CVE-2018-18876?

CVE-2018-18876 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-18876 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-2018-18876?

CVE-2018-18876 affects Columbiaweather Weather Microserver Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18876?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-18876 published?

CVE-2018-18876 was published on 2019-06-18 and last updated on 2026-06-17.

CVE-2018-18876

CVE-2018-18876 is a medium-severity vulnerability in Columbiaweather Weather Microserver Firmware with a CVSS 3.x base score of 5.3. 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: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Columbiaweather Weather Microserver Firmware
Published: 2019-06-18
Last modified: 2026-06-17

Description

In firmware version MS_2.6.9900 of Columbia Weather MicroServer, a readouts_rd.php directory traversal issue makes it possible to read any file present on the underlying operating system.

Frequently asked questions

What is CVE-2018-18876?: In firmware version MS_2.6.9900 of Columbia Weather MicroServer, a readouts_rd.php directory traversal issue makes it possible to read any file present on the underlying operating system.
How severe is CVE-2018-18876?: CVE-2018-18876 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-18876 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-2018-18876?: CVE-2018-18876 affects Columbiaweather Weather Microserver Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18876?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-18876 published?: CVE-2018-18876 was published on 2019-06-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:columbiaweather:weather_microserver_firmware:ms_2.6.9900:*:*:*:*:*:*:*

More vulnerabilities in Columbiaweather Weather Microserver Firmware

CVE-2025-61939 — High (CVSS 8.8): An unused function in MicroServer can start a reverse SSH connection to a vendor registered domain, without mutual…
CVE-2018-18877 — High (CVSS 8.8): In firmware version MS_2.6.9900 of Columbia Weather MicroServer, an authenticated web user can access an alternative…
CVE-2018-18879 — High (CVSS 8.8): In firmware version MS_2.6.9900 of Columbia Weather MicroServer, an authenticated web user can pipe commands directly…
CVE-2025-66620 — High (CVSS 8.0): An unused webshell in MicroServer allows unlimited login attempts, with sudo rights on certain files and directories.…
CVE-2018-18878 — High (CVSS 7.5): In firmware version MS_2.6.9900 of Columbia Weather MicroServer, the BACnet daemon does not properly validate input,…
CVE-2018-18875 — Medium (CVSS 5.4): In firmware version MS_2.6.9900 of Columbia Weather MicroServer, a stored Cross-site scripting (XSS) vulnerability…

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