Telerik Ui For Asp Net Ajax
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Unauthenticated file read and deletion in Progress Telerik UI for ASP.NET AJAX (all versions prior to v2026.2.708) is made possible by a hardcoded cryptographic key (CWE-321) embedded in the obsolete RadChart component's ChartImage.axd HTTP handler. Remote attackers without any credentials can exploit this to read or delete image-extension files within the application directory, bypassing standard authentication controls entirely. No public exploit code exists and the vulnerability is not listed in CISA KEV at time of analysis, but the unauthenticated network-accessible attack vector warrants prompt patching for all affected deployments.
Unauthenticated denial-of-service in Progress Telerik UI for ASP.NET AJAX (all versions prior to 2026.2.708) is possible because the internal LayoutBuilder control parses client-submitted XML without disabling DTD processing, exposing recursive XML entity expansion (CWE-776, 'Billion Laughs'). Any network-reachable attacker can send a crafted HTTP request containing a self-referencing DTD payload to cause exponential memory and CPU exhaustion on the server-side process. No public exploit code or CISA KEV entry has been identified at time of analysis, but the low attack complexity and absence of authentication make this a straightforward DoS primitive once the target endpoint is located.
Server-side request forgery in Progress Telerik UI for ASP.NET AJAX's RadEditor PDF export feature enables authenticated attackers to force the web server to issue outbound HTTP requests to arbitrary attacker-controlled hosts. Because the affected product runs on Windows, those outbound connections can carry Windows NTLM authentication material, exposing credentials for potential relay or offline cracking attacks. The vulnerability affects all versions prior to v2026.2.708 and carries a vendor-confirmed CVSS 6.5 (High confidentiality impact) with no public exploit identified at time of analysis.
Remote code execution in Progress Telerik UI for ASP.NET AJAX prior to v2026.2.708 arises from unsafe .NET type resolution in the persistence framework, where attacker-influenced persisted state is deserialized into arbitrary object types. Network-reachable attackers can leverage this to run arbitrary code on the hosting web server, though the CVSS High attack complexity (AC:H) indicates exploitation depends on influencing persisted state rather than a trivial single request. No public exploit has been identified at time of analysis and it is not listed in CISA KEV, but the deserialization class and product history warrant urgent patching.
Server-side file path manipulation and forced server-side requests in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 stem from insufficient validation of the language (DictionaryLanguage) parameter in the spell check handler, letting remote attackers coerce the server into resolving attacker-influenced file paths and issuing unintended outbound requests. Classified as information disclosure (CWE-36, absolute path traversal) with a CVSS 7.5 confidentiality-only impact, it exposes sensitive server-side file contents. No public exploit identified at time of analysis, and it is not listed in CISA KEV.
Parameter tampering in the DialogHandler component of Progress Telerik UI for ASP.NET AJAX (all versions prior to 2026.2.708) allows unauthenticated remote attackers to manipulate server-side dialog behavior, establishing a foothold for chained exploitation of downstream application components. The CVSS vector specifies High integrity impact with no required privileges (PR:N), making the DialogHandler endpoint a meaningful attack surface in any deployment where it is network-accessible. No public exploit code has been identified at time of analysis and no CISA KEV listing exists, but the vendor's explicit mention of chained exploitation elevates the practical risk beyond the moderate base score of 5.9.
Provider type tampering in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 lets remote attackers manipulate the DialogHandler's provider type input to alter dialog processing, serving as a stepping stone for chained exploitation. The flaw stems from unsafe reflection (CWE-470), where externally-controlled input selects the class/code path handling dialog operations, and carries a CVSS 8.1 (high). There is no public exploit identified at time of analysis and it is not listed in CISA KEV, though Telerik components have a notable history of being targeted once weaponized.
Remote code execution in Progress Telerik UI for ASP.NET AJAX prior to v2026.2.708 arises when the file-based persistence storage provider derives its storage key from user-controlled input, letting a remote attacker steer a path traversal into attacker-controlled deserialization. Because the CVSS vector is PR:N/UI:N, an unauthenticated remote attacker can chain the traversal to load a crafted serialized payload and execute arbitrary code, though the AC:H rating signals the attack is non-trivial to reliably trigger. There is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV.
Remote code execution in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 arises when applications persist state via cookie-based storage in RadPersistenceManager or RadDockLayout, causing the components to deserialize attacker-supplied cookie payloads. An unauthenticated remote attacker who can reach the application and craft a malicious serialized cookie can achieve code execution on the server. No public exploit identified at time of analysis, and this CVE is not listed in CISA KEV; EPSS data was not provided.
Cryptographic key predictability in Progress Telerik UI for ASP.NET AJAX prior to v2026.2.708 lets remote unauthenticated attackers forge integrity-protected upload metadata when Telerik.Upload.ConfigurationHashKey is absent and no explicit machineKey is configured, causing the upload handler to fall back to a predictable default key. This forgery capability is not the end goal but a stepping stone: it unlocks further exploit chains (notably the RAU unauthenticated deserialization chain referenced in the vendor KB). There is no public exploit identified at time of analysis, and the flaw is not listed in CISA KEV; EPSS was not provided.
Information disclosure in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 allows remote unauthenticated attackers to exploit a timing oracle in RadAsyncUpload's upload metadata processing, recovering protected (encrypted/signed) metadata values through measurable response-time differences during cryptographic validation. The flaw stems from non-constant-time comparison of the metadata's cryptographic integrity, letting an attacker probe validity incrementally. No public exploit was identified at time of analysis, and it is not listed in CISA KEV; EPSS and POC data were not provided.
Information disclosure in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 lets remote unauthenticated attackers abuse the RadAsyncUpload control's client-state handling as a cryptographic oracle. Because the server distinguishes decryption failures from invalid-JSON parse failures, an attacker can iteratively probe the encrypted rauPostData token and recover protected metadata values. No public exploit identified at time of analysis, and it is not listed in CISA KEV; EPSS was not provided.
Remote code execution in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 allows attackers to forge upload metadata so that the AsyncUploadTypeName value drives unsafe, attacker-controlled type resolution, letting them instantiate arbitrary types and run code on the hosting server. The flaw sits in the RadAsyncUpload (RAU) handler, historically an unauthenticated endpoint (CVSS PR:N), and carries an 8.1 High score tempered by AC:H, reflecting the crafting/forgery effort required. At time of analysis there is no public exploit identified and it is not in CISA KEV, though the same component has a long history of weaponized deserialization bugs.
Remote code execution in Progress Telerik UI for ASP.NET AJAX via insecure deserialization in the RadFilter control allows unauthenticated remote attackers to execute arbitrary code on the server by tampering with exposed client-side filter state. Affected versions span 2024.4.1114 through 2026.1.421. EPSS data not available; no public exploit or CISA KEV listing identified at time of analysis. The CVSS 8.1 (High) reflects network accessibility but 'High' attack complexity (AC:H), indicating successful exploitation requires specific conditions beyond simple network access.
Uncontrolled resource consumption in Progress Telerik UI for AJAX RadAsyncUpload component allows remote unauthenticated attackers to exhaust disk space by uploading files exceeding configured size limits through chunked upload bypass. The vulnerability arises from missing cumulative size validation during chunk reassembly, enabling attackers to circumvent intended upload restrictions. No authentication required (CVSS:3.1/AV:N/AC:L/PR:N/UI:N), making this exploitable against any internet-facing application using affected versions. Patch available in version 2026.1.421. No CISA KEV listing or public exploit code identified at time of analysis, but low attack complexity and no authentication barrier indicate straightforward exploitation potential.
In Progress® Telerik® UI for AJAX, versions 2011.2.712 to 2025.1.218, an unsafe reflection vulnerability exists that may lead to an unhandled exception resulting in a crash of the hosting process and. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in Progress Telerik UI for ASP.NET AJAX 2021.1.224. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Path traversal in RadChart in Telerik UI for ASP.NET AJAX allows a remote attacker to read and delete an image with extension .BMP, .EXIF, .GIF, .ICON, .JPEG, .PNG, .TIFF, or .WMF on the server. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Absolute path traversal vulnerability in the RadAsyncUpload control in the RadControls in Telerik UI for ASP.NET AJAX before Q3 2012 SP2 allows remote attackers to write to arbitrary files, and. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Unauthenticated file read and deletion in Progress Telerik UI for ASP.NET AJAX (all versions prior to v2026.2.708) is made possible by a hardcoded cryptographic key (CWE-321) embedded in the obsolete RadChart component's ChartImage.axd HTTP handler. Remote attackers without any credentials can exploit this to read or delete image-extension files within the application directory, bypassing standard authentication controls entirely. No public exploit code exists and the vulnerability is not listed in CISA KEV at time of analysis, but the unauthenticated network-accessible attack vector warrants prompt patching for all affected deployments.
Unauthenticated denial-of-service in Progress Telerik UI for ASP.NET AJAX (all versions prior to 2026.2.708) is possible because the internal LayoutBuilder control parses client-submitted XML without disabling DTD processing, exposing recursive XML entity expansion (CWE-776, 'Billion Laughs'). Any network-reachable attacker can send a crafted HTTP request containing a self-referencing DTD payload to cause exponential memory and CPU exhaustion on the server-side process. No public exploit code or CISA KEV entry has been identified at time of analysis, but the low attack complexity and absence of authentication make this a straightforward DoS primitive once the target endpoint is located.
Server-side request forgery in Progress Telerik UI for ASP.NET AJAX's RadEditor PDF export feature enables authenticated attackers to force the web server to issue outbound HTTP requests to arbitrary attacker-controlled hosts. Because the affected product runs on Windows, those outbound connections can carry Windows NTLM authentication material, exposing credentials for potential relay or offline cracking attacks. The vulnerability affects all versions prior to v2026.2.708 and carries a vendor-confirmed CVSS 6.5 (High confidentiality impact) with no public exploit identified at time of analysis.
Remote code execution in Progress Telerik UI for ASP.NET AJAX prior to v2026.2.708 arises from unsafe .NET type resolution in the persistence framework, where attacker-influenced persisted state is deserialized into arbitrary object types. Network-reachable attackers can leverage this to run arbitrary code on the hosting web server, though the CVSS High attack complexity (AC:H) indicates exploitation depends on influencing persisted state rather than a trivial single request. No public exploit has been identified at time of analysis and it is not listed in CISA KEV, but the deserialization class and product history warrant urgent patching.
Server-side file path manipulation and forced server-side requests in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 stem from insufficient validation of the language (DictionaryLanguage) parameter in the spell check handler, letting remote attackers coerce the server into resolving attacker-influenced file paths and issuing unintended outbound requests. Classified as information disclosure (CWE-36, absolute path traversal) with a CVSS 7.5 confidentiality-only impact, it exposes sensitive server-side file contents. No public exploit identified at time of analysis, and it is not listed in CISA KEV.
Parameter tampering in the DialogHandler component of Progress Telerik UI for ASP.NET AJAX (all versions prior to 2026.2.708) allows unauthenticated remote attackers to manipulate server-side dialog behavior, establishing a foothold for chained exploitation of downstream application components. The CVSS vector specifies High integrity impact with no required privileges (PR:N), making the DialogHandler endpoint a meaningful attack surface in any deployment where it is network-accessible. No public exploit code has been identified at time of analysis and no CISA KEV listing exists, but the vendor's explicit mention of chained exploitation elevates the practical risk beyond the moderate base score of 5.9.
Provider type tampering in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 lets remote attackers manipulate the DialogHandler's provider type input to alter dialog processing, serving as a stepping stone for chained exploitation. The flaw stems from unsafe reflection (CWE-470), where externally-controlled input selects the class/code path handling dialog operations, and carries a CVSS 8.1 (high). There is no public exploit identified at time of analysis and it is not listed in CISA KEV, though Telerik components have a notable history of being targeted once weaponized.
Remote code execution in Progress Telerik UI for ASP.NET AJAX prior to v2026.2.708 arises when the file-based persistence storage provider derives its storage key from user-controlled input, letting a remote attacker steer a path traversal into attacker-controlled deserialization. Because the CVSS vector is PR:N/UI:N, an unauthenticated remote attacker can chain the traversal to load a crafted serialized payload and execute arbitrary code, though the AC:H rating signals the attack is non-trivial to reliably trigger. There is no public exploit identified at time of analysis and the CVE is not listed in CISA KEV.
Remote code execution in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 arises when applications persist state via cookie-based storage in RadPersistenceManager or RadDockLayout, causing the components to deserialize attacker-supplied cookie payloads. An unauthenticated remote attacker who can reach the application and craft a malicious serialized cookie can achieve code execution on the server. No public exploit identified at time of analysis, and this CVE is not listed in CISA KEV; EPSS data was not provided.
Cryptographic key predictability in Progress Telerik UI for ASP.NET AJAX prior to v2026.2.708 lets remote unauthenticated attackers forge integrity-protected upload metadata when Telerik.Upload.ConfigurationHashKey is absent and no explicit machineKey is configured, causing the upload handler to fall back to a predictable default key. This forgery capability is not the end goal but a stepping stone: it unlocks further exploit chains (notably the RAU unauthenticated deserialization chain referenced in the vendor KB). There is no public exploit identified at time of analysis, and the flaw is not listed in CISA KEV; EPSS was not provided.
Information disclosure in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 allows remote unauthenticated attackers to exploit a timing oracle in RadAsyncUpload's upload metadata processing, recovering protected (encrypted/signed) metadata values through measurable response-time differences during cryptographic validation. The flaw stems from non-constant-time comparison of the metadata's cryptographic integrity, letting an attacker probe validity incrementally. No public exploit was identified at time of analysis, and it is not listed in CISA KEV; EPSS and POC data were not provided.
Information disclosure in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 lets remote unauthenticated attackers abuse the RadAsyncUpload control's client-state handling as a cryptographic oracle. Because the server distinguishes decryption failures from invalid-JSON parse failures, an attacker can iteratively probe the encrypted rauPostData token and recover protected metadata values. No public exploit identified at time of analysis, and it is not listed in CISA KEV; EPSS was not provided.
Remote code execution in Progress Telerik UI for ASP.NET AJAX before v2026.2.708 allows attackers to forge upload metadata so that the AsyncUploadTypeName value drives unsafe, attacker-controlled type resolution, letting them instantiate arbitrary types and run code on the hosting server. The flaw sits in the RadAsyncUpload (RAU) handler, historically an unauthenticated endpoint (CVSS PR:N), and carries an 8.1 High score tempered by AC:H, reflecting the crafting/forgery effort required. At time of analysis there is no public exploit identified and it is not in CISA KEV, though the same component has a long history of weaponized deserialization bugs.
Remote code execution in Progress Telerik UI for ASP.NET AJAX via insecure deserialization in the RadFilter control allows unauthenticated remote attackers to execute arbitrary code on the server by tampering with exposed client-side filter state. Affected versions span 2024.4.1114 through 2026.1.421. EPSS data not available; no public exploit or CISA KEV listing identified at time of analysis. The CVSS 8.1 (High) reflects network accessibility but 'High' attack complexity (AC:H), indicating successful exploitation requires specific conditions beyond simple network access.
Uncontrolled resource consumption in Progress Telerik UI for AJAX RadAsyncUpload component allows remote unauthenticated attackers to exhaust disk space by uploading files exceeding configured size limits through chunked upload bypass. The vulnerability arises from missing cumulative size validation during chunk reassembly, enabling attackers to circumvent intended upload restrictions. No authentication required (CVSS:3.1/AV:N/AC:L/PR:N/UI:N), making this exploitable against any internet-facing application using affected versions. Patch available in version 2026.1.421. No CISA KEV listing or public exploit code identified at time of analysis, but low attack complexity and no authentication barrier indicate straightforward exploitation potential.
In Progress® Telerik® UI for AJAX, versions 2011.2.712 to 2025.1.218, an unsafe reflection vulnerability exists that may lead to an unhandled exception resulting in a crash of the hosting process and. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in Progress Telerik UI for ASP.NET AJAX 2021.1.224. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Path traversal in RadChart in Telerik UI for ASP.NET AJAX allows a remote attacker to read and delete an image with extension .BMP, .EXIF, .GIF, .ICON, .JPEG, .PNG, .TIFF, or .WMF on the server. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Absolute path traversal vulnerability in the RadAsyncUpload control in the RadControls in Telerik UI for ASP.NET AJAX before Q3 2012 SP2 allows remote attackers to write to arbitrary files, and. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.