Quick answers
- Is CVE-2026-118040 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-118040 being exploited in the wild.
- How severe is CVE-2026-118040?
- High severity, with a CVSS score of 7.5, published 28 October 2026.
- Which products and versions are affected?
- Progress Telerik Document Processing Libraries prior to 2026.3.1027.
- Is there a fix for CVE-2026-118040?
- Yes: fixed in 2026.3.1027. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-118040 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-118040?
- Check whether you run Progress Telerik Document Processing Libraries at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 2026.3.1027
Technical details
The vulnerability is an improper verification of cryptographic signatures and certificate validation flaw (CWE-347, CWE-295) in the RadPdfProcessing digital signature validation component. An unauthenticated attacker with network access can submit a crafted signed PDF document to applications using the library; the validation logic will incorrectly report forged content as unmodified and the malicious signing certificate as valid. A fix is available in version 2026.3.1027 and later.
Affected products
- Progress Telerik Document Processing Libraries prior to 2026.3.1027
Timeline
- 2026-10-28: disclosed: CVE-2026-118040 published