A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
総合評価: CVE-2020-25637 は中リスク（41.2/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.52%、40 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 | 0.10% | 0.52% | +0.42% |
| 2 | 2025-11-21 | 0.18% | 0.10% | -0.08% |
| 3 | 2025-11-18 | — | 0.18% | — |
EPSS の全履歴 （全 14 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 |
|---|---|---|---|---|---|---|
| 6.7 | 3.1 | MEDIUM |
|
0.8 | 5.9 | [email protected] |
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2020-25637: 1 source package rows (libvirt); 15 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 9, open 6. | https://security.alpinelinux.org/vuln/CVE-2020-25637 |
debian
|
not yet assigned | CVE-2020-25637 not yet assigned priority: Debian including 1 source packages (libvirt), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2020-25637 |
gentoo
|
low | CVE-2020-25637: 1 GLSA(s) (202210-06), 2 atom(s) (app-emulation/libvirt, dev-python/libvirt-python); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-25637 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2020-25637 |
suse
|
high | CVE-2020-25637 severity important: SUSE including 850 source package names (0.38.1:libvirt-client-6.0.0-13.8.1, 0.38.1:libvirt-daemon-6.0.0-13.8.1, …), 1522 product×package rows across 70 product lines (Container suse/sles/15.2/virt-handler, Container suse/sles/15.2/virt-launcher, … (70 product lines)): Fixed 1287, Known Affected 231, Known Not Affected 4. | https://www.suse.com/security/cve/CVE-2020-25637/ |
ubuntu
|
negligible | CVE-2020-25637 negligible priority: Ubuntu including 1 source packages (libvirt), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 10, released 3, needed 2, ignored 1. | https://ubuntu.com/security/CVE-2020-25637 |
| URL | タグ |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00072.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00073.html | Mailing List Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1881037 | Issue Tracking Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html | |
| https://security.gentoo.org/glsa/202210-06 | Third Party Advisory |