CVE-2017-11357

CRITICALNVD 9.89.8—Trending — 3 sources updated this weekExploited in the wild

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 99.9%
KEV: ⚠ Exploited

Published

August 23, 2017

Last Modified

April 22, 2026

Advisory Details (2)

Auto-updated May 12, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: cisa.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11357

generic🟡 PoC Available

Telerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Arbitrary File Upload - ASPX webapps Exploit

https://www.exploit-db.com/exploits/43874/

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-03 16:51 UTCEG score recompute
2026-06-03 16:51 UTCGHSA enrichment
2026-06-03 12:33 UTCEG score recompute
2026-06-03 12:33 UTCGHSA enrichment
2026-06-03 08:15 UTCEG score recompute
2026-06-03 08:15 UTCGHSA enrichment
2026-06-03 03:57 UTCEG score recompute
2026-06-03 03:57 UTCGHSA enrichment
2026-06-02 23:39 UTCEG score recompute
2026-06-02 23:39 UTCGHSA enrichment
2026-06-02 19:21 UTCEG score recompute
2026-06-02 19:21 UTCGHSA enrichment
2026-06-02 18:32 UTCkev_newly_listed
2026-06-02 15:03 UTCEG score recompute
2026-06-02 15:03 UTCGHSA enrichment
2026-06-02 10:45 UTCEG score recompute
2026-06-02 10:45 UTCGHSA enrichment
2026-06-02 06:27 UTCEG score recompute
2026-06-02 06:27 UTCGHSA enrichment
2026-06-02 02:09 UTCEG score recompute

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-43874
First seen Jan 24, 2018
Telerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Arbitrary File Upload
Open source ↗

Frequently asked(6)

What is CVE-2017-11357?

CVE-2017-11357 is a critical vulnerability published on August 23, 2017. 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.

When was CVE-2017-11357 disclosed?

CVE-2017-11357 was first published in the National Vulnerability Database on August 23, 2017, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2017-11357 actively exploited?

Yes. CISA added CVE-2017-11357 to the Known Exploited Vulnerabilities catalog on January 26, 2023, affecting Telerik User Interface (UI) for ASP.NET AJAX. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2017-11357?

CVE-2017-11357 has a CVSS v3 base score of 9.8 (NVD).

Which products are affected by CVE-2017-11357?

CVE-2017-11357 affects Telerik User Interface (UI) for ASP.NET AJAX. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2017-11357?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-11357, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2017-11357

📅 Published

🔄 Last Modified

📋 Advisory Details (2)