How severe is CVE-2020-11414?

CVE-2020-11414 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-11414 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11414?

CVE-2020-11414 affects Telerik Ui For Silverlight. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11414?

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-2020-11414 published?

CVE-2020-11414 was published on 2020-03-31 and last updated on 2026-06-17.

CVE-2020-11414

CVE-2020-11414 is a high-severity vulnerability in Telerik Ui For Silverlight with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Telerik Ui For Silverlight
Published: 2020-03-31
Last modified: 2026-06-17

Description

An issue was discovered in Progress Telerik UI for Silverlight before 2020.1.330. The RadUploadHandler class in RadUpload for Silverlight expects a web request that provides the file location of the uploading file along with a few other parameters. The uploading file location should be inside the directory where the upload handler class is defined. Before 2020.1.330, a crafted web request could result in uploads to arbitrary locations.

Frequently asked questions

What is CVE-2020-11414?: An issue was discovered in Progress Telerik UI for Silverlight before 2020.1.330. The RadUploadHandler class in RadUpload for Silverlight expects a web request that provides the file location of the uploading file along with a few other parameters. The uploading file location should be inside the directory where the upload handler class is defined. Before 2020.1.330, a crafted web request could result in uploads to arbitrary locations.
How severe is CVE-2020-11414?: CVE-2020-11414 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-11414 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11414?: CVE-2020-11414 affects Telerik Ui For Silverlight. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11414?: 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-2020-11414 published?: CVE-2020-11414 was published on 2020-03-31 and last updated on 2026-06-17.

References

https://docs.telerik.com/devtools/silverlight/controls/radupload/how-to/secure-upload-file-path

Affected products (1)

cpe:2.3:a:telerik:ui_for_silverlight:*:*:*:*:*:*:*:*

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