CVE-2018-18688

mediumpriority · track · 21EPSS 0.011 · 67 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.15% (67th) EPSS

CVSS 5 · medium

Is it mine?

30 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

The Portable Document Format (PDF) specification does not provide any information regarding the concrete procedure of how to validate signatures. Consequently, an Incremental Saving vulnerability exists in multiple products. When an attacker uses the Incremental Saving feature to add pages or annotations, Body Updates are displayed to the user without any action by the signature-validation logic. This affects Foxit Reader before 9.4 and PhantomPDF before 8.3.9 and 9.x before 9.4. It also affects LibreOffice, Master PDF Editor, Nitro Pro, Nitro Reader, Nuance Power PDF Standard, PDF Editor 6 Pro, PDFelement6 Pro, PDF Studio Viewer 2018, PDF Studio Pro, Perfect PDF 10 Premium, and Perfect PDF Reader.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-347USprimary

affected products (30)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
code-industry master pdf editor= 5.1.12nvdUScpe:2.3:a:code-industry:master_pdf_editor:*:*:*:*:*:*:*:*
code-industry master pdf editor= 5.1.24nvdUScpe:2.3:a:code-industry:master_pdf_editor:*:*:*:*:*:*:*:*
code-industry master pdf editor= 5.1.68nvdUScpe:2.3:a:code-industry:master_pdf_editor:*:*:*:*:*:*:*:*
foxitsoftware foxit reader= 9.1.0nvdUScpe:2.3:a:foxitsoftware:foxit_reader:*:*:*:*:*:*:*:*
foxitsoftware foxit reader= 9.2.0nvdUScpe:2.3:a:foxitsoftware:foxit_reader:*:*:*:*:*:*:*:*
foxitsoftware foxit reader= 9.4nvdUScpe:2.3:a:foxitsoftware:foxit_reader:*:*:*:*:*:*:*:*
foxitsoftware phantompdf= 8.3.9nvdUScpe:2.3:a:foxitsoftware:phantompdf:*:*:*:*:*:*:*:*
foxitsoftware phantompdf9.0 → 9.4nvdUScpe:2.3:a:foxitsoftware:phantompdf:*:*:*:*:*:*:*:*
gonitro nitro pro= 11.0.3.173nvdUScpe:2.3:a:gonitro:nitro_pro:*:*:*:*:*:*:*:*
gonitro nitro reader= 5.5.9.2nvdUScpe:2.3:a:gonitro:nitro_reader:*:*:*:*:*:*:*:*
iskysoft pdf editor 6= 6.4.2.3521nvdUScpe:2.3:a:iskysoft:pdf_editor_6:*:*:*:*:*:*:*:*
iskysoft pdf editor 6= 6.6.2.3315nvdUScpe:2.3:a:iskysoft:pdf_editor_6:*:*:*:*:*:*:*:*
iskysoft pdf editor 6= 6.7.6.3399nvdUScpe:2.3:a:iskysoft:pdf_editor_6:*:*:*:*:*:*:*:*
iskysoft pdfelement6= 6.7.1.3355nvdUScpe:2.3:a:iskysoft:pdfelement6:*:*:*:*:*:*:*:*
iskysoft pdfelement6= 6.7.6.3399nvdUScpe:2.3:a:iskysoft:pdfelement6:*:*:*:*:*:*:*:*
iskysoft pdfelement6= 6.8.0.3523nvdUScpe:2.3:a:iskysoft:pdfelement6:*:*:*:*:*:*:*:*
iskysoft pdfelement6= 6.8.4.3921nvdUScpe:2.3:a:iskysoft:pdfelement6:*:*:*:*:*:*:*:*
libreoffice libreoffice= 6.0.6.2nvdUScpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*
libreoffice libreoffice= 6.1.0.3nvdUScpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*

showing 20 of 30

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-01-07modified 2026-06-17

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+1043 more

references (13)

External citations — patches, advisories, analysis.

scry

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