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.
総合評価: CVE-2018-18688 は低リスク(21.2/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.01%、0 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2025-03-17 | 0.15% | 0.01% | -0.15% |
| 2 | 2023-08-14 | 0.12% | 0.15% | +0.04% |
| 3 | 2023-03-07 | — | 0.12% | — |
EPSS の全履歴 (全 5 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| code-industry | master_pdf_editor | 5.1.12 | cpe:2.3:a:code-industry:master_pdf_editor:5.1.12:*:*:*:*:*:*:* |
| code-industry | master_pdf_editor | 5.1.68 | cpe:2.3:a:code-industry:master_pdf_editor:5.1.68:*:*:*:*:*:*:* |
| foxitsoftware | foxit_reader | 9.4 | cpe:2.3:a:foxitsoftware:foxit_reader:9.4:*:*:*:*:*:*:* |
| foxitsoftware | phantompdf | >= 9.0, < 9.4 | cpe:2.3:a:foxitsoftware:phantompdf:*:*:*:*:*:*:*:* |
| foxitsoftware | phantompdf | 8.3.9 | cpe:2.3:a:foxitsoftware:phantompdf:8.3.9:*:*:*:*:*:*:* |
| gonitro | nitro_pro | 11.0.3.173 | cpe:2.3:a:gonitro:nitro_pro:11.0.3.173:*:*:*:*:*:*:* |
| gonitro | nitro_reader | 5.5.9.2 | cpe:2.3:a:gonitro:nitro_reader:5.5.9.2:*:*:*:*:*:*:* |
| iskysoft | pdf_editor_6 | 6.4.2.3521 | cpe:2.3:a:iskysoft:pdf_editor_6:6.4.2.3521:*:*:*:professional:*:*:* |
| iskysoft | pdfelement6 | 6.8.0.3523 | cpe:2.3:a:iskysoft:pdfelement6:6.8.0.3523:*:*:*:professional:*:*:* |
| iskysoft | pdfelement6 | 6.8.4.3921 | cpe:2.3:a:iskysoft:pdfelement6:6.8.4.3921:*:*:*:professional:*:*:* |
| libreoffice | libreoffice | 6.0.6.2 | cpe:2.3:a:libreoffice:libreoffice:6.0.6.2:*:*:*:*:*:*:* |
| libreoffice | libreoffice | 6.1.3.2 | cpe:2.3:a:libreoffice:libreoffice:6.1.3.2:*:*:*:*:*:*:* |
| nuance | power_pdf_standard | 3.0.0.17 | cpe:2.3:a:nuance:power_pdf_standard:3.0.0.17:*:*:*:*:*:*:* |
| nuance | power_pdf_standard | 3.0.0.30 | cpe:2.3:a:nuance:power_pdf_standard:3.0.0.30:*:*:*:*:*:*:* |
| nuance | power_pdf_standard | 7.0 | cpe:2.3:a:nuance:power_pdf_standard:7.0:*:*:*:*:*:*:* |
| qoppa | pdf_studio | 12.0.7 | cpe:2.3:a:qoppa:pdf_studio:12.0.7:*:*:*:professional:*:*:* |
| qoppa | pdf_studio_viewer_2018 | 2018.0.1 | cpe:2.3:a:qoppa:pdf_studio_viewer_2018:2018.0.1:*:*:*:*:*:*:* |
| qoppa | pdf_studio_viewer_2018 | 2018.2.0 | cpe:2.3:a:qoppa:pdf_studio_viewer_2018:2018.2.0:*:*:*:*:*:*:* |
| soft-xpansion | perfect_pdf_10 | 10.0.0.1 | cpe:2.3:a:soft-xpansion:perfect_pdf_10:10.0.0.1:*:*:*:premium:*:*:* |
| soft-xpansion | perfect_pdf_reader | 13.0.3 | cpe:2.3:a:soft-xpansion:perfect_pdf_reader:13.0.3:*:*:*:*:*:*:* |
| soft-xpansion | perfect_pdf_reader | 13.1.5 | cpe:2.3:a:soft-xpansion:perfect_pdf_reader:13.1.5:*:*:*:*:*:*:* |
| foxitsoftware | foxit_reader | 9.1.0 | cpe:2.3:a:foxitsoftware:foxit_reader:9.1.0:*:*:*:*:*:*:* |
| foxitsoftware | foxit_reader | 9.2.0 | cpe:2.3:a:foxitsoftware:foxit_reader:9.2.0:*:*:*:*:*:*:* |
| code-industry | master_pdf_editor | 5.1.24 | cpe:2.3:a:code-industry:master_pdf_editor:5.1.24:*:*:*:*:*:*:* |
| iskysoft | pdf_editor_6 | 6.6.2.3315 | cpe:2.3:a:iskysoft:pdf_editor_6:6.6.2.3315:*:*:*:professional:*:*:* |
| iskysoft | pdf_editor_6 | 6.7.6.3399 | cpe:2.3:a:iskysoft:pdf_editor_6:6.7.6.3399:*:*:*:professional:*:*:* |
| iskysoft | pdfelement6 | 6.7.1.3355 | cpe:2.3:a:iskysoft:pdfelement6:6.7.1.3355:*:*:*:professional:*:*:* |
| iskysoft | pdfelement6 | 6.7.6.3399 | cpe:2.3:a:iskysoft:pdfelement6:6.7.6.3399:*:*:*:professional:*:*:* |
| libreoffice | libreoffice | 6.1.0.3 | cpe:2.3:a:libreoffice:libreoffice:6.1.0.3:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://pdf-insecurity.org/signature/evaluation_2018.html | Third Party Advisory |
| https://pdf-insecurity.org/signature/signature.html | Third Party Advisory |
| https://www.foxitsoftware.com/support/security-bulletins.php | Vendor Advisory |
| https://www.pdfa.org/recently-identified-pdf-digital-signature-vulnerabilities/ | Third Party Advisory |