In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.
総合評価: CVE-2021-45079 は高リスク（66/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 2.76%、84 パーセンタイル） 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 | 2026-06-22 | 2.72% | 2.76% | +0.04% |
| 2 | 2026-06-15 | 0.10% | 2.72% | +2.62% |
| 3 | 2025-11-21 | — | 0.10% | — |
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 |
|---|---|---|---|---|---|---|
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
| 5.8 | 2.0 | MEDIUM |
|
8.6 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
critical | CVE-2021-45079: 1 source package rows (strongswan); 33 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 7, open 26. | https://security.alpinelinux.org/vuln/CVE-2021-45079 |
debian
|
not yet assigned | CVE-2021-45079 not yet assigned priority: Debian including 1 source packages (strongswan), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-45079 |
gentoo
|
normal | CVE-2021-45079: 1 GLSA(s) (202405-08), 1 atom(s) (net-vpn/strongswan); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-45079 |
suse
|
medium | CVE-2021-45079 severity moderate: SUSE including 56 source package names (strongswan-4.4.0-6.36.12.1, strongswan-5.1.3-26.20.1, …), 244 product×package rows across 52 product lines (HPE Helion OpenStack 8, SUSE CaaS Platform 4.0, … (52 product lines)): Fixed 244. | https://www.suse.com/security/cve/CVE-2021-45079/ |
ubuntu
|
medium | CVE-2021-45079 medium priority: Ubuntu including 1 source packages (strongswan), 15 status rows across 15 suites (bionic, focal, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 14, ignored 1. | https://ubuntu.com/security/CVE-2021-45079 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| strongswan | strongswan | >= 4.1.2, < 5.9.5 | cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:* |
| 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:*:*:*:*:*:*:* |
| fedoraproject | extra_packages_for_enterprise_linux | 7.0 | cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:* |
| fedoraproject | extra_packages_for_enterprise_linux | 8.0 | cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:* |
| fedoraproject | extra_packages_for_enterprise_linux | 9.0 | cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:9.0:*:*:*:*:*:*:* |
| fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
| fedoraproject | fedora | 35 | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 20.04 | cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 21.10 | cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:* |