How severe is CVE-2015-4455?

CVE-2015-4455 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-2015-4455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 41% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2015-4455?

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-2015-4455 published?

CVE-2015-4455 was published on 2017-05-23 and last updated on 2026-06-17.

CVE-2015-4455

CVE-2015-4455 is a critical-severity vulnerability in Aviary Image Editor Add-on For Gravity Forms Project Aviary Image Editor Add-on For Gravity Forms with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 41% places it in the 98th 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: 41% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Aviary Image Editor Add-on For Gravity Forms Project Aviary Image Editor Add-on For Gravity Forms
Published: 2017-05-23
Last modified: 2026-06-17

Description

Unrestricted file upload vulnerability in includes/upload.php in the Aviary Image Editor Add-on For Gravity Forms plugin 3.0 beta for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in wp-content/uploads/gform_aviary.

Frequently asked questions

What is CVE-2015-4455?: Unrestricted file upload vulnerability in includes/upload.php in the Aviary Image Editor Add-on For Gravity Forms plugin 3.0 beta for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in wp-content/uploads/gform_aviary.
How severe is CVE-2015-4455?: CVE-2015-4455 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-2015-4455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 41% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4455?: CVE-2015-4455 affects Aviary Image Editor Add-on For Gravity Forms Project Aviary Image Editor Add-on For Gravity Forms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-4455?: 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-2015-4455 published?: CVE-2015-4455 was published on 2017-05-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:aviary_image_editor_add-on_for_gravity_forms_project:aviary_image_editor_add-on_for_gravity_forms:*:beta:*:*:*:wordpress:*:*

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