An out-of-bounds write in the Graphite 2 library triggered with a maliciously crafted Graphite font. This results in a potentially exploitable crash. This issue was fixed in the Graphite 2 library as well as Mozilla products. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
総合評価: CVE-2017-5436 は中リスク（58.6/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.56%、68 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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 | 2026-05-17 | 1.05% | 0.56% | -0.49% |
| 2 | 2025-11-21 | 1.24% | 1.05% | -0.19% |
| 3 | 2025-11-18 | — | 1.24% | — |
EPSS の全履歴 （全 12 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 |
|---|---|---|---|---|---|---|
| 8.8 | 3.0 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2017-5436 not yet assigned priority: Debian including 2 source packages (firefox, firefox-esr), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. | https://security-tracker.debian.org/tracker/CVE-2017-5436 |
gentoo
|
high | CVE-2017-5436: 2 GLSA(s) (201706-25, 201802-03), 3 atom(s) (media-gfx/graphite2, www-client/firefox, www-client/firefox-bin); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-5436 |
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2017-5436 |
suse
|
medium | CVE-2017-5436 severity moderate: SUSE including 420 source package names (MozillaFirefox, MozillaFirefox-102.11.0-150200.152.87.1, …), 855 product×package rows across 103 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (103 product lines)): Fixed 590, Known Affected 231, Known Not Affected 34. | https://www.suse.com/security/cve/CVE-2017-5436/ |
ubuntu
|
medium | CVE-2017-5436 medium priority: Ubuntu including 2 source packages (firefox, thunderbird), 12 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): released 10, ignored 2. | https://ubuntu.com/security/CVE-2017-5436 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 6.0 | cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 6.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 7.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 6.0 | cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.5 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 6.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* |
| sil | graphite2 | — | cpe:2.3:a:sil:graphite2:-:*:*:*:*:*:*:* |
| mozilla | firefox | < 45.9.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | firefox | < 53.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | firefox | 52.0 | cpe:2.3:a:mozilla:firefox:52.0:*:*:*:*:*:*:* |
| mozilla | thunderbird | < 52.1.0 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.securityfocus.com/bid/97940 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1038320 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:1104 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:1106 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:1201 | Third Party Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1345461 | Issue Tracking Vendor Advisory |
| https://security.gentoo.org/glsa/201706-25 | Third Party Advisory |
| https://www.debian.org/security/2017/dsa-3831 | Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-10/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-11/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-12/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-13/ | Vendor Advisory |