How severe is CVE-2019-25217?

CVE-2019-25217 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-25217 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-25217?

CVE-2019-25217 affects Siteground Speed Optimizer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-25217?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2019-25217 have an EU (EUVD) identifier?

Yes. CVE-2019-25217 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19365.

When was CVE-2019-25217 published?

CVE-2019-25217 was published on 2024-10-16 and last updated on 2026-06-17.

CVE-2019-25217

CVE-2019-25217 is a critical-severity vulnerability in Siteground Speed Optimizer with a CVSS 3.x base score of 9.8. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2019-19365
Weakness: CWE-862
Affected product: Siteground Speed Optimizer
Published: 2024-10-16
Last modified: 2026-06-17

Description

The SiteGround Optimizer plugin for WordPress is vulnerable to authorization bypass leading to Remote Code Execution and Local File Inclusion in versions up to, and including, 5.0.12 due to incorrect use of an access control attribute on the switch_php function called via the /switch-php REST API route. This allows attackers to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where images and other “safe” file types can be uploaded and included.

Frequently asked questions

What is CVE-2019-25217?: The SiteGround Optimizer plugin for WordPress is vulnerable to authorization bypass leading to Remote Code Execution and Local File Inclusion in versions up to, and including, 5.0.12 due to incorrect use of an access control attribute on the switch_php function called via the /switch-php REST API route. This allows attackers to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where images and other “safe” file types can be uploaded and included.
How severe is CVE-2019-25217?: CVE-2019-25217 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-25217 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-25217?: CVE-2019-25217 affects Siteground Speed Optimizer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-25217?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2019-25217 have an EU (EUVD) identifier?: Yes. CVE-2019-25217 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-19365.
When was CVE-2019-25217 published?: CVE-2019-25217 was published on 2024-10-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:siteground:speed_optimizer:*:*:*:*:*:wordpress:*:*

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