An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.
総合評価: CVE-2018-5709 は中リスク(58.2/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 2.11%、79 パーセンタイル) 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 | 1.64% | 2.11% | +0.47% |
| 2 | 2026-05-30 | 1.38% | 1.64% | +0.26% |
| 3 | 2026-05-16 | — | 1.38% | — |
EPSS の全履歴 (全 18 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 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2018-5709: 1 source package rows (krb5); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. | https://security.alpinelinux.org/vuln/CVE-2018-5709 |
debian
|
unimportant | CVE-2018-5709 unimportant priority: Debian including 1 source packages (krb5), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. | https://security-tracker.debian.org/tracker/CVE-2018-5709 |
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2018-5709 |
suse
|
medium | CVE-2018-5709 severity moderate: SUSE including 13 source package names (krb5, krb5-32bit, …), 125 product×package rows across 35 product lines (Magnum Orchestration 7, SLES for SAP Applications 11 SP3, … (35 product lines)): Known Not Affected 125. | https://www.suse.com/security/cve/CVE-2018-5709/ |
ubuntu
|
negligible | CVE-2018-5709 negligible priority: Ubuntu including 1 source packages (krb5), 13 status rows across 13 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, trusty, upstream, xenial): ignored 12, deferred 1. | https://ubuntu.com/security/CVE-2018-5709 |