Buffer overflow in QUIC dissector in Wireshark 3.4.0 to 3.4.1 allows denial of service via packet injection or crafted capture file
総合評価: CVE-2020-26422 は中リスク(50.9/100)。CVSS 深刻度は低。悪用される可能性が高い(EPSS 4.67%、91 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 +4.36% 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 | 0.31% | 4.67% | +4.36% |
| 2 | 2025-11-21 | 0.35% | 0.31% | -0.05% |
| 3 | 2025-11-18 | — | 0.35% | — |
EPSS の全履歴 (全 13 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 |
|---|---|---|---|---|---|---|
| 3.7 | 3.1 | LOW |
|
2.2 | 1.4 | [email protected] |
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2020-26422: 1 source package rows (wireshark); 11 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 4. | https://security.alpinelinux.org/vuln/CVE-2020-26422 |
debian
|
unimportant | CVE-2020-26422 unimportant priority: Debian including 1 source packages (wireshark), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2020-26422 |
gentoo
|
normal | CVE-2020-26422: 1 GLSA(s) (202101-12), 1 atom(s) (net-analyzer/wireshark); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-26422 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2020-26422 |
suse
|
medium | CVE-2020-26422 severity moderate: SUSE including 86 source package names (libQt5Multimedia5-5.9.7-7.2.1, libqt5-qtmultimedia-devel-5.9.7-7.2.1, …), 493 product×package rows across 73 product lines (HPE Helion OpenStack 8, Image SLES15-SP3-SAP-Azure-LI-BYOS-Production, … (73 product lines)): Fixed 390, Known Not Affected 103. | https://www.suse.com/security/cve/CVE-2020-26422/ |
ubuntu
|
medium | CVE-2020-26422 medium priority: Ubuntu including 1 source packages (wireshark), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 8, needs-triage 8. | https://ubuntu.com/security/CVE-2020-26422 |
| URL | タグ |
|---|---|
| https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26422.json | Third Party Advisory |
| https://gitlab.com/wireshark/wireshark/-/issues/17073 | Issue Tracking Third Party Advisory |
| https://security.gentoo.org/glsa/202101-12 | Third Party Advisory |
| https://www.oracle.com/security-alerts/cpuApr2021.html | Patch Third Party Advisory |
| https://www.wireshark.org/security/wnpa-sec-2020-20.html | Vendor Advisory |