Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-91812
Foxit PDF Editor/Reader FoxitUpdater Improper Certificate Validation Local Privilege Escalation Vulnerability
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H N N U H H H 8.1 .0014 2.9 —
AFFECTED
Product Versions Fixed
Foxit PDF Editor Versions 2026.2 and earlier – —
Foxit PDF Reader Versions 2026.2 and earlier – —
TIMELINE
Sep 15 Reserved by Foxit
Sep 23 Published (CNA: Foxit)
Oct 8 RESCORED — CVE-2026-91812 (Foxit Software Inc. Foxit PDF Editor). CVSS 7.9 → 8.1 (NVD).
Description
A vulnerability in Foxit PDF Editor/Reader’s update mechanism allows man-in-the-middle attackers to bypass certificate validation and package integrity checks, potentially enabling arbitrary code execution with system privileges.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 15, 2026 | Reserved | Reserved by Foxit |
| September 23, 2026 | Published | Published (CNA: Foxit) |
| October 8, 2026 | RESCORED | RESCORED — CVE-2026-91812 (Foxit Software Inc. Foxit PDF Editor). CVSS 7.9 → 8.1 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Foxit Software Inc. | Foxit PDF Editor | — | Versions 2026.2 and earlier | — |
| Foxit Software Inc. | Foxit PDF Reader | — | Versions 2026.2 and earlier | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-91812 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
