A vulnerability in the implementation of Session Initiation Protocol (SIP) functionality in Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones could allow an unauthenticated, remote attacker to cause an affected device to become unresponsive, resulting in a denial of service (DoS) condition. The vulnerability is due to the improper handling of SIP request messages by an affected device. An attacker could exploit this vulnerability by using formatted specifiers in a SIP payload that is sent to an affected device. A successful exploit could allow the attacker to cause the affected device to become unresponsive, resulting in a DoS condition that persists until the device is restarted manually. This vulnerability affects Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones that are running firmware release 7.6.2SR1 or earlier. Cisco Bug IDs: CSCvc63986.
総合評価: CVE-2017-12260 は中リスク(59.2/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 2.30%、81 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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。
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 | 1.41% | 2.30% | +0.89% |
| 2 | 2025-03-30 | 1.85% | 1.41% | -0.45% |
| 3 | 2025-03-29 | — | 1.85% | — |
EPSS の全履歴 (全 11 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| cisco | spa_501g_firmware | <= 7.6.2 | cpe:2.3:o:cisco:spa_501g_firmware:*:sr1:*:*:*:*:*:* |
| cisco | spa_502g_firmware | <= 7.6.2 | cpe:2.3:o:cisco:spa_502g_firmware:*:sr1:*:*:*:*:*:* |
| cisco | spa_504g_firmware | <= 7.6.2 | cpe:2.3:o:cisco:spa_504g_firmware:*:sr1:*:*:*:*:*:* |
| cisco | spa_508g_firmware | <= 7.6.2 | cpe:2.3:o:cisco:spa_508g_firmware:*:sr1:*:*:*:*:*:* |
| cisco | spa_509g_firmware | <= 7.6.2 | cpe:2.3:o:cisco:spa_509g_firmware:*:sr1:*:*:*:*:*:* |
| cisco | spa_512g_firmware | <= 7.6.2 | cpe:2.3:o:cisco:spa_512g_firmware:*:sr1:*:*:*:*:*:* |
| cisco | spa_514g_firmware | <= 7.6.2 | cpe:2.3:o:cisco:spa_514g_firmware:*:sr1:*:*:*:*:*:* |
| cisco | spa_525g_firmware | <= 7.6.2 | cpe:2.3:o:cisco:spa_525g_firmware:*:sr1:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.securityfocus.com/bid/101495 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1039616 | Third Party Advisory VDB Entry |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171018-sip1 | Vendor Advisory |