How severe is CVE-2017-17976?

CVE-2017-17976 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-2017-17976 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-17976?

CVE-2017-17976 affects Perfexcrm Perfex Crm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-17976?

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-2017-17976 published?

CVE-2017-17976 was published on 2018-01-26 and last updated on 2026-06-17.

CVE-2017-17976

CVE-2017-17976 is a critical-severity vulnerability in Perfexcrm Perfex Crm with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 13% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Perfexcrm Perfex Crm
Published: 2018-01-26
Last modified: 2026-06-17

Description

In Utilities.php in Perfex CRM 1.9.7, Unrestricted file upload can lead to remote code execution.

Frequently asked questions

What is CVE-2017-17976?: In Utilities.php in Perfex CRM 1.9.7, Unrestricted file upload can lead to remote code execution.
How severe is CVE-2017-17976?: CVE-2017-17976 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-2017-17976 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-17976?: CVE-2017-17976 affects Perfexcrm Perfex Crm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-17976?: 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-2017-17976 published?: CVE-2017-17976 was published on 2018-01-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:perfexcrm:perfex_crm:1.9.7:*:*:*:*:*:*:*

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