Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. Fixed in Apache HTTP Server 2.4.25 (Affected 2.4.1-2.4.23). Fixed in Apache HTTP Server 2.2.32 (Affected 2.2.0-2.2.31).
総合評価: CVE-2016-4975 は中リスク(56.9/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 73.27%、99 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 | 2026-04-05 | 75.34% | 73.27% | -2.07% |
| 2 | 2026-03-13 | 73.01% | 75.34% | +2.33% |
| 3 | 2026-03-04 | — | 73.01% | — |
EPSS の全履歴 (全 46 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 |
|---|---|---|---|---|---|---|
| 6.1 | 3.0 | MEDIUM |
|
2.8 | 2.7 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2016-4975 low priority: Debian including 1 source packages (apache2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-4975 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2016-4975 |
suse
|
low | CVE-2016-4975 severity low: SUSE including 26 source package names (apache2, apache2-2.4.16-20.19.1, …), 123 product×package rows across 26 product lines (SUSE Enterprise Storage 4, SUSE Linux Enterprise High Performance Computing 12 SP5, … (26 product lines)): Fixed 99, Known Not Affected 24. | https://www.suse.com/security/cve/CVE-2016-4975/ |
ubuntu
|
low | CVE-2016-4975 low priority: Ubuntu including 1 source packages (apache2), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): not-affected 3, released 3. | https://ubuntu.com/security/CVE-2016-4975 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| apache | http_server | 2.2.0 | cpe:2.3:a:apache:http_server:2.2.0:*:*:*:*:*:*:* |
| apache | http_server | 2.2.2 | cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:* |
| apache | http_server | 2.2.3 | cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:* |
| apache | http_server | 2.2.4 | cpe:2.3:a:apache:http_server:2.2.4:*:*:*:*:*:*:* |
| apache | http_server | 2.2.6 | cpe:2.3:a:apache:http_server:2.2.6:*:*:*:*:*:*:* |
| apache | http_server | 2.2.8 | cpe:2.3:a:apache:http_server:2.2.8:*:*:*:*:*:*:* |
| apache | http_server | 2.2.9 | cpe:2.3:a:apache:http_server:2.2.9:*:*:*:*:*:*:* |
| apache | http_server | 2.2.10 | cpe:2.3:a:apache:http_server:2.2.10:*:*:*:*:*:*:* |
| apache | http_server | 2.2.11 | cpe:2.3:a:apache:http_server:2.2.11:*:*:*:*:*:*:* |
| apache | http_server | 2.2.12 | cpe:2.3:a:apache:http_server:2.2.12:*:*:*:*:*:*:* |
| apache | http_server | 2.2.13 | cpe:2.3:a:apache:http_server:2.2.13:*:*:*:*:*:*:* |
| apache | http_server | 2.2.14 | cpe:2.3:a:apache:http_server:2.2.14:*:*:*:*:*:*:* |
| apache | http_server | 2.2.15 | cpe:2.3:a:apache:http_server:2.2.15:*:*:*:*:*:*:* |
| apache | http_server | 2.2.16 | cpe:2.3:a:apache:http_server:2.2.16:*:*:*:*:*:*:* |
| apache | http_server | 2.2.17 | cpe:2.3:a:apache:http_server:2.2.17:*:*:*:*:*:*:* |
| apache | http_server | 2.2.18 | cpe:2.3:a:apache:http_server:2.2.18:*:*:*:*:*:*:* |
| apache | http_server | 2.2.19 | cpe:2.3:a:apache:http_server:2.2.19:*:*:*:*:*:*:* |
| apache | http_server | 2.2.20 | cpe:2.3:a:apache:http_server:2.2.20:*:*:*:*:*:*:* |
| apache | http_server | 2.2.21 | cpe:2.3:a:apache:http_server:2.2.21:*:*:*:*:*:*:* |
| apache | http_server | 2.2.22 | cpe:2.3:a:apache:http_server:2.2.22:*:*:*:*:*:*:* |
| apache | http_server | 2.2.23 | cpe:2.3:a:apache:http_server:2.2.23:*:*:*:*:*:*:* |
| apache | http_server | 2.2.24 | cpe:2.3:a:apache:http_server:2.2.24:*:*:*:*:*:*:* |
| apache | http_server | 2.2.25 | cpe:2.3:a:apache:http_server:2.2.25:*:*:*:*:*:*:* |
| apache | http_server | 2.2.26 | cpe:2.3:a:apache:http_server:2.2.26:*:*:*:*:*:*:* |
| apache | http_server | 2.2.27 | cpe:2.3:a:apache:http_server:2.2.27:*:*:*:*:*:*:* |
| apache | http_server | 2.2.29 | cpe:2.3:a:apache:http_server:2.2.29:*:*:*:*:*:*:* |
| apache | http_server | 2.2.31 | cpe:2.3:a:apache:http_server:2.2.31:*:*:*:*:*:*:* |
| apache | http_server | 2.4.1 | cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:* |
| apache | http_server | 2.4.2 | cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:* |
| apache | http_server | 2.4.3 | cpe:2.3:a:apache:http_server:2.4.3:*:*:*:*:*:*:* |
| apache | http_server | 2.4.4 | cpe:2.3:a:apache:http_server:2.4.4:*:*:*:*:*:*:* |
| apache | http_server | 2.4.6 | cpe:2.3:a:apache:http_server:2.4.6:*:*:*:*:*:*:* |
| apache | http_server | 2.4.7 | cpe:2.3:a:apache:http_server:2.4.7:*:*:*:*:*:*:* |
| apache | http_server | 2.4.9 | cpe:2.3:a:apache:http_server:2.4.9:*:*:*:*:*:*:* |
| apache | http_server | 2.4.10 | cpe:2.3:a:apache:http_server:2.4.10:*:*:*:*:*:*:* |
| apache | http_server | 2.4.12 | cpe:2.3:a:apache:http_server:2.4.12:*:*:*:*:*:*:* |
| apache | http_server | 2.4.16 | cpe:2.3:a:apache:http_server:2.4.16:*:*:*:*:*:*:* |
| apache | http_server | 2.4.17 | cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:* |
| apache | http_server | 2.4.18 | cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:* |
| apache | http_server | 2.4.20 | cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:* |
| apache | http_server | 2.4.23 | cpe:2.3:a:apache:http_server:2.4.23:*:*:*:*:*:*:* |