Use-after-free vulnerability in the nsContentUtils::ContentIsHostIncludingDescendantOf function in Mozilla Firefox before 25.0, Firefox ESR 24.x before 24.1, Thunderbird before 24.1, and SeaMonkey before 2.22 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via vectors involving HTML document templates.
総合評価: CVE-2013-5603 は高リスク（72.2/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 5.42%、92 パーセンタイル） 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
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 | 2026-06-15 | 5.27% | 5.42% | +0.15% |
| 2 | 2025-07-09 | 4.43% | 5.27% | +0.84% |
| 3 | 2025-04-09 | — | 4.43% | — |
EPSS の全履歴 （全 10 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 |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2013-5603: 1 GLSA(s) (201504-01), 7 atom(s) (dev-libs/nspr, mail-client/thunderbird, …); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-5603 |
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2013-5603 |
suse
|
high | CVE-2013-5603 severity important: SUSE including 59 source package names (MozillaFirefox-140.2.0-160000.1.2, MozillaFirefox-31.1.0esr-1.20, …), 75 product×package rows across 26 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (26 product lines)): Fixed 75. | https://www.suse.com/security/cve/CVE-2013-5603/ |
ubuntu
|
medium | CVE-2013-5603 medium priority: Ubuntu including 2 source packages (firefox, thunderbird), 12 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): released 10, ignored 2. | https://ubuntu.com/security/CVE-2013-5603 |
: CWE-416: Use After Free per http://cwe.mitre.org/data/definitions/416.html
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| mozilla | thunderbird | <= 24.0.1 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0 | cpe:2.3:a:mozilla:thunderbird:17.0:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0.1 | cpe:2.3:a:mozilla:thunderbird:17.0.1:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0.2 | cpe:2.3:a:mozilla:thunderbird:17.0.2:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0.3 | cpe:2.3:a:mozilla:thunderbird:17.0.3:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0.4 | cpe:2.3:a:mozilla:thunderbird:17.0.4:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0.5 | cpe:2.3:a:mozilla:thunderbird:17.0.5:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0.6 | cpe:2.3:a:mozilla:thunderbird:17.0.6:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0.7 | cpe:2.3:a:mozilla:thunderbird:17.0.7:*:*:*:*:*:*:* |
| mozilla | thunderbird | 17.0.8 | cpe:2.3:a:mozilla:thunderbird:17.0.8:*:*:*:*:*:*:* |
| mozilla | thunderbird | 24.0 | cpe:2.3:a:mozilla:thunderbird:24.0:*:*:*:*:*:*:* |
| mozilla | thunderbird_esr | 17.0.9 | cpe:2.3:a:mozilla:thunderbird_esr:17.0.9:*:*:*:*:*:*:* |
| mozilla | firefox | 24.0 | cpe:2.3:a:mozilla:firefox:24.0:*:*:*:*:*:*:* |
| mozilla | firefox | 24.0.1 | cpe:2.3:a:mozilla:firefox:24.0.1:*:*:*:*:*:*:* |
| mozilla | firefox | 24.0.2 | cpe:2.3:a:mozilla:firefox:24.0.2:*:*:*:*:*:*:* |
| mozilla | seamonkey | <= 2.22 | cpe:2.3:a:mozilla:seamonkey:*:beta2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:alpha_1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:alpha_2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:alpha_3:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:beta_1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:beta_2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:rc1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0 | cpe:2.3:a:mozilla:seamonkey:2.0:rc2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.1 | cpe:2.3:a:mozilla:seamonkey:2.0.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.2 | cpe:2.3:a:mozilla:seamonkey:2.0.2:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.3 | cpe:2.3:a:mozilla:seamonkey:2.0.3:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.4 | cpe:2.3:a:mozilla:seamonkey:2.0.4:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.5 | cpe:2.3:a:mozilla:seamonkey:2.0.5:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.6 | cpe:2.3:a:mozilla:seamonkey:2.0.6:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.7 | cpe:2.3:a:mozilla:seamonkey:2.0.7:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.8 | cpe:2.3:a:mozilla:seamonkey:2.0.8:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.9 | cpe:2.3:a:mozilla:seamonkey:2.0.9:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.10 | cpe:2.3:a:mozilla:seamonkey:2.0.10:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.11 | cpe:2.3:a:mozilla:seamonkey:2.0.11:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.12 | cpe:2.3:a:mozilla:seamonkey:2.0.12:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.13 | cpe:2.3:a:mozilla:seamonkey:2.0.13:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.0.14 | cpe:2.3:a:mozilla:seamonkey:2.0.14:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:alpha1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:alpha2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:alpha3:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:beta1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:beta2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:beta3:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:rc1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.1 | cpe:2.3:a:mozilla:seamonkey:2.1:rc2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.10 | cpe:2.3:a:mozilla:seamonkey:2.10:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.10 | cpe:2.3:a:mozilla:seamonkey:2.10:beta1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.10 | cpe:2.3:a:mozilla:seamonkey:2.10:beta2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.10 | cpe:2.3:a:mozilla:seamonkey:2.10:beta3:*:*:*:*:*:* |
| mozilla | seamonkey | 2.10.1 | cpe:2.3:a:mozilla:seamonkey:2.10.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.11 | cpe:2.3:a:mozilla:seamonkey:2.11:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.11 | cpe:2.3:a:mozilla:seamonkey:2.11:beta1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.11 | cpe:2.3:a:mozilla:seamonkey:2.11:beta2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.11 | cpe:2.3:a:mozilla:seamonkey:2.11:beta3:*:*:*:*:*:* |
| mozilla | seamonkey | 2.11 | cpe:2.3:a:mozilla:seamonkey:2.11:beta4:*:*:*:*:*:* |
| mozilla | seamonkey | 2.11 | cpe:2.3:a:mozilla:seamonkey:2.11:beta5:*:*:*:*:*:* |
| mozilla | seamonkey | 2.11 | cpe:2.3:a:mozilla:seamonkey:2.11:beta6:*:*:*:*:*:* |
| mozilla | seamonkey | 2.12 | cpe:2.3:a:mozilla:seamonkey:2.12:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.12 | cpe:2.3:a:mozilla:seamonkey:2.12:beta1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.12 | cpe:2.3:a:mozilla:seamonkey:2.12:beta2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.12 | cpe:2.3:a:mozilla:seamonkey:2.12:beta3:*:*:*:*:*:* |
| mozilla | seamonkey | 2.12 | cpe:2.3:a:mozilla:seamonkey:2.12:beta4:*:*:*:*:*:* |
| mozilla | seamonkey | 2.12 | cpe:2.3:a:mozilla:seamonkey:2.12:beta5:*:*:*:*:*:* |
| mozilla | seamonkey | 2.12 | cpe:2.3:a:mozilla:seamonkey:2.12:beta6:*:*:*:*:*:* |
| mozilla | seamonkey | 2.12.1 | cpe:2.3:a:mozilla:seamonkey:2.12.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13 | cpe:2.3:a:mozilla:seamonkey:2.13:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13 | cpe:2.3:a:mozilla:seamonkey:2.13:beta1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13 | cpe:2.3:a:mozilla:seamonkey:2.13:beta2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13 | cpe:2.3:a:mozilla:seamonkey:2.13:beta3:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13 | cpe:2.3:a:mozilla:seamonkey:2.13:beta4:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13 | cpe:2.3:a:mozilla:seamonkey:2.13:beta5:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13 | cpe:2.3:a:mozilla:seamonkey:2.13:beta6:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13.1 | cpe:2.3:a:mozilla:seamonkey:2.13.1:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.13.2 | cpe:2.3:a:mozilla:seamonkey:2.13.2:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.14 | cpe:2.3:a:mozilla:seamonkey:2.14:*:*:*:*:*:*:* |
| mozilla | seamonkey | 2.14 | cpe:2.3:a:mozilla:seamonkey:2.14:beta1:*:*:*:*:*:* |
| mozilla | seamonkey | 2.14 | cpe:2.3:a:mozilla:seamonkey:2.14:beta2:*:*:*:*:*:* |
| mozilla | seamonkey | 2.14 | cpe:2.3:a:mozilla:seamonkey:2.14:beta3:*:*:*:*:*:* |