CVE-2026-18622 Foxit PDF Editor/Reader's signature-validation pop-up reports modified certified documents as valid
Foxit PDF Editor/Reader incorrectly validates modified certified documents, misleading users into trusting tampered files due to inconsistent signature alerts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-18622?
CVE-2026-18622 is a medium-severity vulnerability in Foxit Pdf Editor, published on 13 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Foxit PDF Editor/Reader inconsistently alerts users when signature fields are abnormally modified, including alterations to appearance, coordinates, or field duplication. This may mislead users into trusting tampered documents, since the UI cannot accurately reflect the actual integrity status of signatures.
Weakness: CWE-451
Which versions are affected by CVE-2026-18622?
It affects 2 products.
Products include Foxit Pdf Editor, Foxit Pdf Reader.
How do I fix CVE-2026-18622?
No fix has been published for CVE-2026-18622 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-18622 being exploited?
There is no known exploitation of CVE-2026-18622 in the wild and no public exploit code.
Other vulnerabilities in Foxit Pdf Editor
Sources
Also known as GHSA-9462-v678-qmwm.