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Noroxi
NVD / CVE Program· CNA Foxit

CVE-2026-18622: Foxit PDF Editor/Reader's signature-validation pop-up reports modified certified documents as valid

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.13% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit No fix recorded
Published
Aug 13, 2026
Updated
Sep 10, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Foxit
4.7
0.8 point gap

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-18622

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
foxitpdf editor
foxitpdf reader
microsoftwindows
applemacos

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • foxit pdf editorup to 13.2.5.24109 inclusive
  • foxit pdf editor14.0.0.33046 and later · up to 14.0.5.33580 inclusive
  • foxit pdf editor2023.1.0.15510 and later · up to 2023.3.0.23028 inclusive
  • foxit pdf editor2024.1.0.23997 and later · up to 2024.4.1.27687 inclusive
  • foxit pdf editor2025.1.0.27937 and later · up to 2025.3.0.35737 inclusive
  • foxit pdf editor2026.1.0.36452 and later · up to 2026.1.2.36540 inclusive
  • foxit pdf editor2025.1.0.66692 and later · up to 2025.3.0.69570 inclusive
  • foxit pdf editor2026.1.0.70169 and later · up to 2026.1.2.70304 inclusive
  • foxit pdf editorup to 13.2.5.63482 inclusive
  • foxit pdf editor14.0.0.68868 and later · up to 14.0.5.69339 inclusive
  • foxit pdf editor2023.1.0.55583 and later · up to 2023.3.0.63083 inclusive
  • foxit pdf editor2024.1.0.63682 and later · up to 2024.4.1.66479 inclusive
  • foxit pdf readerup to 2026.1.2.36540 inclusive
  • foxit pdf readerup to 2026.1.2.70304 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Foxit). Independent of NVD's CPE analysis and usually ahead of it.

  • Foxit Software Inc. Foxit PDF Editor

    • Versions 2026.1.2 and earlier, Versions 14.0.5 and earlier, Versions 13.2.5 and earlieraffected

  • Foxit Software Inc. Foxit PDF Reader

    • Versions 2026.1.2 and earlieraffected

Same product

foxit: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-27363Foxit PDF Reader exportXFAData Exposed Dangerous Method Remote Code Execution Vulnerability
    44Plan
  • CVE-2024-25938A use-after-free vulnerability exists in the way Foxit Reader 2024.1.0.23997 handles a Barcode widget.
    40Plan
  • CVE-2024-25648A use-after-free vulnerability exists in the way Foxit Reader 2024.1.0.23997 handles a ComboBox widget.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-57259Jul 8, 2026 · Foxit PDF Editor/Reader XDP XFA XXE arbitrary local file read
    26Monitor
  • ← EarlierCVE-2026-57260Jul 8, 2026 · Security vulnerability in Foxit PDF Editor/Reader — U3D Adobe Mesh Decompression (Type Confusion / Invalid Pointer Dereference)
    31Monitor
  • Later →CVE-2026-91788Sep 23, 2026 · Foxit PDF Editor/Reader Missing Authorization Information Disclosure Vulnerability
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-451 · User Interface (UI) Misrepresentation of Critical Information

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records