Certain instructions need intercepting and emulating by Xen. In some cases Xen emulates the instruction by replaying it, using an executable stub. Some instructions may raise an exception, which is supposed to be handled gracefully. Certain replayed instructions have additional logic to set up and recover the changes to the arithmetic flags. For replayed instructions where the flags recovery logic is used, the metadata for exception handling was incorrect, preventing Xen from handling the the exception gracefully, treating it as fatal instead.
総合評価: CVE-2025-27465 は低リスク(31.8/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.55%、42 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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 | 2026-06-16 | 0.53% | 0.55% | +0.02% |
| 2 | 2026-06-15 | 0.34% | 0.53% | +0.19% |
| 3 | 2026-05-12 | — | 0.34% | — |
EPSS の全履歴 (全 7 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 |
|---|---|---|---|---|---|---|
| 4.3 | 3.1 | MEDIUM |
|
2.8 | 1.4 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2025-27465: 1 source package rows (xen); 382 state rows across 6 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 42, open 340. | https://security.alpinelinux.org/vuln/CVE-2025-27465 |
debian
|
end-of-life | CVE-2025-27465 end-of-life priority: Debian including 1 source packages (xen), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2025-27465 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2025-27465/ |
ubuntu
|
medium | CVE-2025-27465 medium priority: Ubuntu including 1 source packages (xen), 9 status rows across 9 suites (bionic, focal, jammy, noble, oracular, plucky, questing, upstream, xenial): needs-triage 7, ignored 2. | https://ubuntu.com/security/CVE-2025-27465 |
| URL | タグ |
|---|---|
| https://xenbits.xenproject.org/xsa/advisory-470.html | Patch Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2025/07/01/1 | Mailing List Third Party Advisory |
| http://xenbits.xen.org/xsa/advisory-470.html | Patch Vendor Advisory |