TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers' installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the current version of the product. If an attacker were to know this key, they could decrypt protect information stored in the registry or configuration files of TeamViewer. With versions before v9.x , this allowed for attackers to decrypt the Unattended Access password to the system (which allows for remote login to the system as well as headless file browsing). The latest version still uses the same key for OptionPasswordAES but appears to have changed how the Unattended Access password is stored. While in most cases an attacker requires an existing session on a system, if the registry/configuration keys were stored off of the machine (such as in a file share or online), an attacker could then decrypt the required password to login to the system.
総合評価: CVE-2019-18988 は在野悪用が確認された重大脅威(81.9/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 4.75%、91 パーセンタイル) 根拠: CISA KEV に登録(追加日 2021-11-03)。TeamViewer / Desktop が対象で、弱点分類 CWE-521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。
: TeamViewer Desktop Bypass Remote Login Vulnerability · CISA KEV の詳細
: 2021-11-03
: 2022-05-03
: Apply updates per vendor instructions.
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 7.63% | 4.75% | -2.88% |
| 2 | 2026-04-19 | 8.80% | 7.63% | -1.17% |
| 3 | 2026-02-01 | — | 8.80% | — |
EPSS の全履歴 (全 28 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 |
|---|---|---|---|---|---|---|
| 7.0 | 3.1 | HIGH |
|
1.0 | 5.9 | [email protected] |
| 7.0 | 3.1 | HIGH |
|
1.0 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 4.4 | 2.0 | MEDIUM |
|
3.4 | 6.4 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| teamviewer | teamviewer | <= 14.7.1965 | cpe:2.3:a:teamviewer:teamviewer:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://community.teamviewer.com/t5/Announcements/Specification-on-CVE-2019-18988/td-p/82264 | Vendor Advisory |
| https://community.teamviewer.com/t5/Knowledge-Base/tkb-p/Knowledgebase?threadtype=label&labels=Security | Broken Link Vendor Advisory |
| https://twitter.com/Blurbdust/status/1224212682594770946?s=20 | Third Party Advisory |
| https://whynotsecurity.com/blog/teamviewer/ | Exploit Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-18988 | US Government Resource |