A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device to be processed. A successful exploit could cause an affected device to continuously consume memory and eventually reload, resulting in a DoS condition. Cisco Bug IDs: CSCvf22394.
総合評価: CVE-2018-0158 は在野悪用が確認された重大脅威(87.1/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 7.19%、93 パーセンタイル) 根拠: CISA KEV に登録(追加日 2022-03-03)。Cisco / IOS Software and Cisco IOS XE Software が対象で、弱点分類 CWE-20の悪用が確認されています。未認証でリモート管理権限を奪取されるリスクが極めて高い。 推奨対応: CISA の対応期限を過ぎています。緊急のパッチ適用を最優先に検討してください。
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。
: Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability · CISA KEV の詳細
: 2022-03-03
: 2022-03-17
: Apply updates per vendor instructions.
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 | 14.56% | 7.19% | -7.36% |
| 2 | 2026-03-07 | 11.32% | 14.56% | +3.24% |
| 3 | 2025-12-16 | — | 11.32% | — |
EPSS の全履歴 (全 19 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 |
|---|---|---|---|---|---|---|
| 8.6 | 3.1 | HIGH |
|
3.9 | 4.0 | [email protected] |
| 8.6 | 3.1 | HIGH |
|
3.9 | 4.0 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 7.8 | 2.0 | HIGH |
|
10.0 | 6.9 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| cisco | ios | 15.5\(3\)s1.1 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.1:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.2 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.2:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.4 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.4:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.5 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.5:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.7 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.7:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.8 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.8:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.9 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.9:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.10 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.10:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.11 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.11:*:*:*:*:*:*:* |
| cisco | ios | 15.5\(3\)s1.12 | cpe:2.3:o:cisco:ios:15.5\(3\)s1.12:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.1 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.1:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.2 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.2:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.4 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.4:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.5 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.5:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.7 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.7:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.8 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.8:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.9 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.9:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.10 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.10:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.11 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.11:*:*:*:*:*:*:* |
| cisco | ios_xe | 15.5\(3\)s1.12 | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.12:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.securityfocus.com/bid/103566 | Broken Link Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1040595 | Broken Link Third Party Advisory VDB Entry |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03 | Third Party Advisory US Government Resource VDB Entry |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 | Third Party Advisory US Government Resource VDB Entry |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike | Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0158 | US Government Resource |