Improper Signature and Certificate Validation in Telerik Document Processing Libraries RadPdfProcessing
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2026.3.1027
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The Telerik Document Processing Libraries, specifically the RadPdfProcessing component used for PDF handling in .NET applications, are affected. An unauthenticated attacker can craft a specially signed PDF so that the library incorrectly reports forged content as unmodified and its signing certificate as valid, undermining trust in digital signatures.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
In Progress® Telerik® Document Processing Libraries prior to version 2026.3.1027, improper verification of cryptographic signatures and improper certificate validation in RadPdfProcessing digital signature validation allow an unauthenticated attacker to cause signature validation to report forged content as unmodified and its signing certificate as valid via a crafted signed PDF document.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Progress Software Telerik Document Processing Libraries
fixed in 2026.3.1027