9.8

CVE-2017-11357: Telerik UI for ASP.NET AJAX Insecure Direct Object Reference Vulnerability

CVSS: 9.8v3.1CriticalKEVRansomwareAnalyzed
Published 23-08-2017Last modified 14-08-2026

Vulnerability summary

CVE-2017-11357 is a critical (CVSS 9.8) vulnerability in Telerik User Interface (UI) for ASP.NET AJAX. It is known to be exploited: CISA lists it, first on 26-01-2023. It has been used in ransomware campaigns. EPSS estimates a 77.68% chance of exploitation in the next 30 days, higher than 99.5% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
77.68%
0%100%
Critical · 0.00 pp in 30 days
KEVListedCISA
RansomwareKnown useFlagged by CISA
Public exploits1exploit-database

Timeline

  1. 23-08-2017
    PublishedVulnerability first disclosed.
  2. 26-01-2023
    Added to CISA KEVTelerik UI for ASP.NET AJAX Insecure Direct Object Reference Vulnerability
  3. 16-02-2023
    CISA remediation dueApply updates per vendor instructions.
  4. 14-08-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

77.68%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

0.00 pp

From 77.68% on 20-09-2026

20-09-202620-10-2026
EPSS score
77.68%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
26-01-2023
Federal due date
16-02-2023
Ransomware

Public exploits

1 found
  • exploit-databaseaspxUnverified

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

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Progress1 product

1 vendor · 1 product

References

3 links