How severe is CVE-2017-18390?

CVE-2017-18390 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-18390 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18390?

CVE-2017-18390 affects Cpanel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18390?

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-2017-18390 published?

CVE-2017-18390 was published on 2019-08-02 and last updated on 2026-06-17.

CVE-2017-18390

CVE-2017-18390 is a high-severity vulnerability in Cpanel with a CVSS 3.x base score of 7.8. 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-275.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-275
Affected product: Cpanel
Published: 2019-08-02
Last modified: 2026-06-17

Description

cPanel before 68.0.15 allows code execution in the context of the root account because of weak permissions on incremental backups (SEC-322).

Frequently asked questions

What is CVE-2017-18390?: cPanel before 68.0.15 allows code execution in the context of the root account because of weak permissions on incremental backups (SEC-322).
How severe is CVE-2017-18390?: CVE-2017-18390 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-18390 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18390?: CVE-2017-18390 affects Cpanel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18390?: 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-2017-18390 published?: CVE-2017-18390 was published on 2019-08-02 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Cpanel

CVE-2004-1770 — Critical (CVSS 10.0): The login page for cPanel 9.1.0, and possibly other versions, allows remote attackers to execute arbitrary code via…
CVE-2004-1769 — Critical (CVSS 10.0): The "Allow cPanel users to reset their password via email" feature in cPanel 9.1.0 build 34 and earlier, including 8.x,…
CVE-2003-1425 — Critical (CVSS 10.0): guestbook.cgi in cPanel 5.0 allows remote attackers to execute arbitrary commands via the template parameter.
CVE-2026-41940 — Critical (CVSS 9.8): cPanel and WHM versions after 11.40 contain an authentication bypass vulnerability in the login flow that allows…
CVE-2020-26108 — Critical (CVSS 9.8): cPanel before 88.0.13 mishandles file-extension dispatching, leading to code execution (SEC-488).
CVE-2020-26105 — Critical (CVSS 9.8): In cPanel before 88.0.3, insecure chkservd test credentials are used on a templated VM (SEC-554).

All CVEs affecting Cpanel →

Other CWE-275 vulnerabilities

CVE-2017-6513 — Critical (CVSS 9.9): The WHMCS Reseller Module V2 2.0.2 in Softaculous Virtualizor before 2.9.1.0 does not verify the user correctly, which…
CVE-2017-17060 — Critical (CVSS 9.8): OX Software GmbH OX App Suite 7.8.4 and earlier is affected by: Insecure Permissions.
CVE-2017-16887 — Critical (CVSS 9.8): The portal on FiberHome Mobile WIFI Device Model LM53Q1 VH519R05C01S38 uses SOAP based web services in order to…
CVE-2023-39399 — Critical (CVSS 9.1): Parameter verification vulnerability in the installd module. Successful exploitation of this vulnerability may cause…
CVE-2023-39398 — Critical (CVSS 9.1): Parameter verification vulnerability in the installd module. Successful exploitation of this vulnerability may cause…
CVE-2019-2177 — High (CVSS 8.8): In isPreferred of HidProfile.java in Android 7.1.1, 7.1.2, 8.0, 8.1 and 9, there is a possible device type confusion…

Browse all CWE-275 vulnerabilities →