Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Exim. Authentication is not required to exploit this vulnerability. The specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of a buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. . Was ZDI-CAN-17434.
総合評価: CVE-2023-42115 は高リスク（67.5/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 10.04%、95 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 | 65.81% | 10.04% | -55.77% |
| 2 | 2026-05-22 | 70.69% | 65.81% | -4.87% |
| 3 | 2026-04-05 | — | 70.69% | — |
EPSS の全履歴 （全 27 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 |
|---|---|---|---|---|---|---|
| 9.8 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-42115: 1 source package rows (exim); 31 state rows across 6 repos (3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 6, open 25. | https://security.alpinelinux.org/vuln/CVE-2023-42115 |
debian
|
not yet assigned | CVE-2023-42115 not yet assigned priority: Debian including 1 source packages (exim4), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2023-42115 |
gentoo
|
high | CVE-2023-42115: 1 GLSA(s) (202402-18), 1 atom(s) (mail-mta/exim); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-42115 |
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2023-42115 |
ubuntu
|
medium | CVE-2023-42115 medium priority: Ubuntu including 1 source packages (exim4), 8 status rows across 8 suites (bionic, focal, jammy, lunar, mantic, trusty, upstream, xenial): released 5, not-affected 3. | https://ubuntu.com/security/CVE-2023-42115 |
| URL | タグ |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-23-1469/ | Third Party Advisory |