An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device (NBD) server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service.
総合評価: CVE-2017-7539 は中リスク(55.9/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 5.53%、92 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。 直近 1 日で EPSS が +2.56% 上昇。悪用への関心が高まっている可能性があります。 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 | 2.97% | 5.53% | +2.56% |
| 2 | 2026-05-24 | 2.75% | 2.97% | +0.21% |
| 3 | 2025-12-14 | — | 2.75% | — |
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 |
|---|---|---|---|---|---|---|
| 5.3 | 3.0 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 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 |
|---|---|---|---|
debian
|
unimportant | CVE-2017-7539 unimportant priority: Debian including 1 source packages (qemu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2017-7539 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2017-7539 |
ubuntu
|
medium | CVE-2017-7539 medium priority: Ubuntu including 2 source packages (qemu, qemu-kvm), 8 status rows across 4 suites (trusty, upstream, xenial, zesty): DNE 3, not-affected 3, needed 2. | https://ubuntu.com/security/CVE-2017-7539 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| qemu | qemu | < 2.10.1 | cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* |
| redhat | openstack | 6.0 | cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:* |
| redhat | openstack | 7.0 | cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:* |
| redhat | openstack | 8 | cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:* |
| redhat | openstack | 9 | cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:* |
| redhat | openstack | 10 | cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* |
| redhat | openstack | 11 | cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:* |
| redhat | virtualization | 4.0 | cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* |
| redhat | virtualization | 3.0 | cpe:2.3:a:redhat:virtualization:3.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.openwall.com/lists/oss-security/2017/07/21/4 | Mailing List Patch Third Party Advisory |
| http://www.securityfocus.com/bid/99944 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:2628 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:3466 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:3470 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:3471 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:3472 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:3473 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2017:3474 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7539 | Issue Tracking Patch Third Party Advisory |
| https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=2b0bbc4f8809c972bad134bc1a2570dbb01dea0b | |
| https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=ff82911cd3f69f028f2537825c9720ff78bc3f19 |