There is a buffer over-read in Ruby before 2.6.10, 2.7.x before 2.7.6, 3.x before 3.0.4, and 3.1.x before 3.1.2. It occurs in String-to-Float conversion, including Kernel#Float and String#to_f.
総合評価: CVE-2022-28739 は中リスク（61.6/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 4.13%、90 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 | 2026-07-03 | 3.87% | 4.13% | +0.26% |
| 2 | 2026-06-15 | 0.31% | 3.87% | +3.56% |
| 3 | 2026-04-23 | — | 0.31% | — |
EPSS の全履歴 （全 51 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] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2022-28739: 1 source package rows (ruby); 60 state rows across 8 repos (3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 8, open 52. | https://security.alpinelinux.org/vuln/CVE-2022-28739 |
debian
|
not yet assigned | CVE-2022-28739 not yet assigned priority: Debian including 1 source packages (ruby2.7), 1 status rows across 1 suites (bullseye): resolved 1. | https://security-tracker.debian.org/tracker/CVE-2022-28739 |
gentoo
|
normal | CVE-2022-28739: 1 GLSA(s) (202401-27), 1 atom(s) (dev-lang/ruby); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-28739 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2022-28739 |
suse
|
medium | CVE-2022-28739 severity moderate: SUSE including 356 source package names (2.17-17.3:libruby2_5-2_5-2.5.9-150000.4.23.1, 2.17-17.3:ruby2.5-2.5.9-150000.4.23.1, …), 1049 product×package rows across 225 product lines (Container bci/ruby, Container suse/rmt-server, … (225 product lines)): Fixed 825, Known Affected 184, Will Not Fix 40. | https://www.suse.com/security/cve/CVE-2022-28739/ |
ubuntu
|
low | CVE-2022-28739 low priority: Ubuntu including 4 source packages (ruby2.3, ruby2.5, ruby2.7, ruby3.0), 11 status rows across 7 suites (bionic, focal, impish, jammy, kinetic, upstream, xenial): released 6, needs-triage 3, DNE 1, not-affected 1. | https://ubuntu.com/security/CVE-2022-28739 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| ruby-lang | ruby | < 2.6.10 | cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* |
| ruby-lang | ruby | >= 2.7.0, < 2.7.6 | cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* |
| ruby-lang | ruby | >= 3.0.0, < 3.0.4 | cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* |
| ruby-lang | ruby | >= 3.1.0, < 3.1.2 | cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| debian | debian_linux | 11.0 | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
| apple | macos | >= 11.0, < 11.7.1 | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| apple | macos | >= 12.0, < 12.6.1 | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://seclists.org/fulldisclosure/2022/Oct/28 | |
| http://seclists.org/fulldisclosure/2022/Oct/29 | |
| http://seclists.org/fulldisclosure/2022/Oct/30 | |
| http://seclists.org/fulldisclosure/2022/Oct/41 | Mailing List Third Party Advisory |
| http://seclists.org/fulldisclosure/2022/Oct/42 | |
| https://hackerone.com/reports/1248108 | Permissions Required Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/06/msg00012.html | |
| https://security-tracker.debian.org/tracker/CVE-2022-28739 | Third Party Advisory |
| https://security.gentoo.org/glsa/202401-27 | |
| https://security.netapp.com/advisory/ntap-20220624-0002/ | Third Party Advisory |
| https://support.apple.com/kb/HT213488 | Third Party Advisory |
| https://support.apple.com/kb/HT213493 | Third Party Advisory |
| https://support.apple.com/kb/HT213494 | Third Party Advisory |
| https://www.ruby-lang.org/en/news/2022/04/12/buffer-overrun-in-string-to-float-cve-2022-28739/ | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2024/09/msg00000.html |