The cycle collection (CC) implementation in Mozilla Firefox before 25.0, Firefox ESR 24.x before 24.1, Thunderbird before 24.1, and SeaMonkey before 2.22 does not properly determine the thread for release of an image object, which allows remote attackers to execute arbitrary code or cause a denial of service (race condition and application crash) via a large HTML document containing IMG elements, as demonstrated by the Never-Ending Reddit on reddit.com.
総合評価: CVE-2013-5596 は中リスク（58.7/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 3.14%、86 パーセンタイル） 根拠: 直近 1 日で EPSS が +1.37% 上昇。悪用への関心が高まっている可能性があります。 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 | 2026-06-15 | 1.77% | 3.14% | +1.37% |
| 2 | 2025-07-09 | 1.90% | 1.77% | -0.12% |
| 3 | 2025-03-30 | — | 1.90% | — |
EPSS の全履歴 （全 9 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 |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2013-5596: 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-2013-5596 |
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2013-5596 |
suse
|
high | CVE-2013-5596 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-2013-5596/ |
ubuntu
|
medium | CVE-2013-5596 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-2013-5596 |
| 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 | firefox | <= 24.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | firefox | 19.0 | cpe:2.3:a:mozilla:firefox:19.0:*:*:*:*:*:*:* |
| mozilla | firefox | 19.0.1 | cpe:2.3:a:mozilla:firefox:19.0.1:*:*:*:*:*:*:* |
| mozilla | firefox | 19.0.2 | cpe:2.3:a:mozilla:firefox:19.0.2:*:*:*:*:*:*:* |
| mozilla | firefox | 20.0 | cpe:2.3:a:mozilla:firefox:20.0:*:*:*:*:*:*:* |
| mozilla | firefox | 20.0.1 | cpe:2.3:a:mozilla:firefox:20.0.1:*:*:*:*:*:*:* |
| mozilla | firefox | 21.0 | cpe:2.3:a:mozilla:firefox:21.0:*:*:*:*:*:*:* |
| mozilla | firefox | 22.0 | cpe:2.3:a:mozilla:firefox:22.0:*:*:*:*:*:*:* |
| mozilla | firefox | 23.0 | cpe:2.3:a:mozilla:firefox:23.0:*:*:*:*:*:*:* |
| mozilla | firefox | 23.0.1 | cpe:2.3:a:mozilla:firefox:23.0.1:*:*:*:*:*:*:* |
| 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:*:*:*:*:*:* |