How severe is CVE-2018-20940?

CVE-2018-20940 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-20940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20940?

CVE-2018-20940 affects Cpanel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20940?

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

When was CVE-2018-20940 published?

CVE-2018-20940 was published on 2019-08-01 and last updated on 2026-06-17.

CVE-2018-20940

CVE-2018-20940 is a low-severity vulnerability in Cpanel with a CVSS 3.x base score of 3.3. 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-362.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
CVSS v2: 2.1
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Cpanel
Published: 2019-08-01
Last modified: 2026-06-17

Description

cPanel before 68.0.27 allows attackers to read root's crontab file during a short time interval upon the enabling of backups (SEC-342).

Frequently asked questions

What is CVE-2018-20940?: cPanel before 68.0.27 allows attackers to read root's crontab file during a short time interval upon the enabling of backups (SEC-342).
How severe is CVE-2018-20940?: CVE-2018-20940 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-20940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20940?: CVE-2018-20940 affects Cpanel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-20940 published?: CVE-2018-20940 was published on 2019-08-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*

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