GHSA-44qp-qhfv-c7f6 · 深刻度： high · エコシステム： maven — Improper Handling of Exceptional Conditions in Apache Tomcat
A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service. An error introduced as part of a change to improve error handling during non-blocking I/O meant that the error flag associated with the Request object was not reset between requests. This meant that once a non-blocking I/O error occurred, all future requests handled by that request object would fail. Users were able to trigger non-blocking I/O errors, e.g. by dropping a connection, thereby creating the possibility of triggering a DoS. Applications that do not use non-blocking I/O are not exposed to this vulnerability. This issue affects Apache Tomcat 10.0.3 to 10.0.4; 9.0.44; 8.5.64.
総合評価: CVE-2021-30639 は高リスク（67.6/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 6.89%、93 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。 直近 1 日で EPSS が +6.47% 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: 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 | 0.42% | 6.89% | +6.47% |
| 2 | 2026-03-28 | 0.71% | 0.42% | -0.29% |
| 3 | 2026-03-17 | — | 0.71% | — |
EPSS の全履歴 （全 31 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
GHSA-44qp-qhfv-c7f6 · 深刻度： high · エコシステム： maven — Improper Handling of Exceptional Conditions in Apache Tomcat
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2021-30639 unimportant priority: Debian including 1 source packages (tomcat9), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-30639 |
gentoo
|
low | CVE-2021-30639: 1 GLSA(s) (202208-34), 1 atom(s) (www-servers/tomcat); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-30639 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2021-30639 |
ubuntu
|
medium | CVE-2021-30639 medium priority: Ubuntu including 4 source packages (tomcat6, tomcat7, tomcat8, tomcat9), 60 status rows across 15 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): DNE 37, not-affected 14, ignored 7, released 2. | https://ubuntu.com/security/CVE-2021-30639 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apache | tomcat | 8.5.64 | cpe:2.3:a:apache:tomcat:8.5.64:*:*:*:*:*:*:* |
| apache | tomcat | 9.0.44 | cpe:2.3:a:apache:tomcat:9.0.44:*:*:*:*:*:*:* |
| apache | tomcat | 10.0.3 | cpe:2.3:a:apache:tomcat:10.0.3:*:*:*:*:*:*:* |
| apache | tomcat | 10.0.4 | cpe:2.3:a:apache:tomcat:10.0.4:*:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | < 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:*:*:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:-:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_1:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_10:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_2:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_3:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_4:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_5:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_6:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_7:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_8:*:*:*:*:*:* |
| mcafee | epolicy_orchestrator | 5.10.0 | cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_9:*:*:*:*:*:* |
| oracle | big_data_spatial_and_graph | < 23.1 | cpe:2.3:a:oracle:big_data_spatial_and_graph:*:*:*:*:*:*:*:* |