---
title: "CVE-2026-118040: In Progress Telerik Document Processing Libraries - Broken Cryptographic Validation"
description: "In Progress Telerik Document Processing Libraries < 2026.3.1027 contain an improper verification of cryptographic signatures and certificate validation in RadPdfProcessing digital signature validation, letting unauthenticated attackers forge signature validation results via crafted signed PDF documents."
url: https://panop.io/threat-heartbeat/CVE-2026-118040/
---

# CVE-2026-118040 In Progress Telerik Document Processing Libraries - Broken Cryptographic Validation

In Progress Telerik Document Processing Libraries < 2026.3.1027 contain an improper verification of cryptographic signatures and certificate validation in RadPdfProcessing digital signature validation, letting unauthenticated attackers forge signature validation results via crafted signed PDF documents.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-118040)

## Details

Type

Broken Cryptographic Validation

Impact

Information Disclosure, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Published

28 October 2026

Updated

29 October 2026

Weakness

[CWE-295](https://cwe.mitre.org/data/definitions/295.html)

## Vendor fix

Update to version 2026.3.1027 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-118040](https://nvd.nist.gov/vuln/detail/CVE-2026-118040)
- [https://docs.telerik.com/devtools/document-processing/knowledge-base/kb-security-improper-verification-of-cryptographic-signature-cve-2026-118040](https://docs.telerik.com/devtools/document-processing/knowledge-base/kb-security-improper-verification-of-cryptographic-signature-cve-2026-118040)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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