Vulnerability · Published Aug 13, 2026 · Assigned by Foxit
CVE-2026-18622Foxit PDF Editor/Reader's signature-validation pop-up reports modified certified documents as valid
Medium 4.7
In plain English
A medium-severity security flaw in Foxit PDF Editor from Foxit Software Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)4.7Medium
Exploit odds (30 days)0.1%top 97.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Foxit Software Inc. | Foxit PDF Editor | Versions 2026.1.2 and earlierVersions 14.0.5 and earlierVersions 13.2.5 and earlier |
| Foxit Software Inc. | Foxit PDF Reader | Versions 2026.1.2 and earlier |
Weakness: CWE-451 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N