How severe is CVE-2018-7500?

CVE-2018-7500 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-2018-7500 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7500?

CVE-2018-7500 primarily affects Osisoft Pi Web Api. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-7500?

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.

When was CVE-2018-7500 published?

CVE-2018-7500 was published on 2018-03-14 and last updated on 2026-06-17.

CVE-2018-7500

CVE-2018-7500 is a critical-severity vulnerability in Osisoft Pi Web Api 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-264.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Osisoft Pi Web Api
Published: 2018-03-14
Last modified: 2026-06-17

Description

A Permissions, Privileges, and Access Controls issue was discovered in OSIsoft PI Web API versions 2017 R2 and prior. Privileges may be escalated, giving attackers access to the PI System via the service account.

Frequently asked questions

What is CVE-2018-7500?: A Permissions, Privileges, and Access Controls issue was discovered in OSIsoft PI Web API versions 2017 R2 and prior. Privileges may be escalated, giving attackers access to the PI System via the service account.
How severe is CVE-2018-7500?: CVE-2018-7500 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-2018-7500 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7500?: CVE-2018-7500 primarily affects Osisoft Pi Web Api. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-7500?: 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.
When was CVE-2018-7500 published?: CVE-2018-7500 was published on 2018-03-14 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:osisoft:pi_web_api:*:*:*:*:*:*:*:*
cpe:2.3:a:osisoft:pi_web_api:2017:r2:*:*:*:*:*:*
cpe:2.3:a:osisoft:pi_vision:2017:r2:*:*:*:*:*:*

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