NVD / CVE Program· CNA mitre

CVE-2017-11357: Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote…

CriticalCVSS 9.8 · v3.1KEVWeaponized No fix recorded

Noroxi assessment

Priority: Now (action score 92/100)

CISA has confirmed exploitation in the wild (Jan 26, 2023); it is known to be used in ransomware campaigns. Remediation deadline for US federal agencies: Feb 16, 2023.
Probability of exploitation in the next 30 days: 77.6% (FIRST EPSS); higher than 99.5% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
According to the record, no fixed version is available yet.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Patch today or shut off access. Until a fix is released, restrict access to the affected component and follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

BDU:2020-02118

Published: Aug 23, 2017
Updated: Aug 14, 2026
EPSS: 77.6% · 99th percentile
CWE: CWE-434

Report tools

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Action score

Now

Patch today or shut off access.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 30 / 30 · Listed
EPSS: 23 / 30 · 77.6%

CISA SSVC decision

Exploitation: active
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Jan 26, 2023. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Feb 16, 2023.

Known to be used in ransomware campaigns.

Get told when this record changes

In CISA KEV: exploitation in the wild confirmed
Weaponized exploit exists
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

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Vendor	Product	CPE
progress	telerik ui for asp.net ajax	cpe:2.3:a:progress:telerik_ui_for_asp.net_ajax

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

progress telerik ui for asp.net ajaxbefore 2020.1.114

Same product

progress: all records

Other highest-scoring records for the same primary product.

CVE-2021-28141An issue was discovered in Progress Telerik UI for ASP.NET AJAX 2021.1.224.
40Plan
CVE-2026-6023Deserialization of Untrusted Data Vulnerability in Telerik UI for ASP.NET AJAX
39Monitor
CVE-2025-3600Unsafe Reflection Vulnerability in Telerik UI for ASP.NET AJAX
38Monitor

Published before and after this one in the same product

← EarlierCVE-2014-2217Dec 25, 2014 · Absolute path traversal vulnerability in the RadAsyncUpload control in the RadControls in Telerik UI for ASP.NET AJAX before Q3 2012 SP2…
31Monitor
Later →CVE-2026-2878Feb 25, 2026 · Insufficient Entropy Vulnerability in Telerik UI for ASP.NET AJAX
23Monitor
Later →CVE-2026-6022Apr 22, 2026 · Uncontrolled Resource Consumption Vulnerability in Telerik UI for ASP.NET AJAX
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Exploit-DB entry	webapps	2018-01-24

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.