CVE-2026-91814CWE-347

CVE-2026-91814

Medium · published September 23, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
1.2
In the wild
Unconfirmed
What it is

A signature validation vulnerability exists in Foxit PDF Editor/Reader’s handling of incrementally updated PDF documents. Changes to visible document content may not invalidate the existing signature, allowing attackers to alter signed content and potentially carry out content spoofing while the document continues to appear validly signed.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00109 · 1.2th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-09-23T12:17Z
References (1)
https://www.foxit.com/support/security-bulletins.html · 14984358-7092-470d-8f34-ade47a7658a2
EPSS history
Timeline
  • 24 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 23 SEP 07:49Z
    Security vulnerability: Foxit PDF Editor/Reader Fails to Detect Modifications to Signed Documents Displaying Newly Added Content
    cvelistv5