How severe is CVE-2020-15167?

CVE-2020-15167 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-15167 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15167?

CVE-2020-15167 affects Johnkerl Miller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15167?

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-2020-15167 published?

CVE-2020-15167 was published on 2020-09-02 and last updated on 2026-06-17.

CVE-2020-15167

CVE-2020-15167 is a high-severity vulnerability in Johnkerl Miller with a CVSS 3.x base score of 8.2. 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-427.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v2: 4.4
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Johnkerl Miller
Published: 2020-09-02
Last modified: 2026-06-17

Description

In Miller (command line utility) using the configuration file support introduced in version 5.9.0, it is possible for an attacker to cause Miller to run arbitrary code by placing a malicious `.mlrrc` file in the working directory. See linked GitHub Security Advisory for complete details. A fix is ready and will be released as Miller 5.9.1.

Frequently asked questions

What is CVE-2020-15167?: In Miller (command line utility) using the configuration file support introduced in version 5.9.0, it is possible for an attacker to cause Miller to run arbitrary code by placing a malicious `.mlrrc` file in the working directory. See linked GitHub Security Advisory for complete details. A fix is ready and will be released as Miller 5.9.1.
How severe is CVE-2020-15167?: CVE-2020-15167 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-15167 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15167?: CVE-2020-15167 affects Johnkerl Miller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15167?: 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-2020-15167 published?: CVE-2020-15167 was published on 2020-09-02 and last updated on 2026-06-17.

References

https://github.com/johnkerl/miller/security/advisories/GHSA-mw2v-4q78-j2cw

Affected products (1)

cpe:2.3:a:johnkerl:miller:5.9.0:*:*:*:*:*:*:*

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