Memory corruption in Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones | Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones | — | No fix listed | CNA |
- Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones Vendor— Affected Cisco Small Business SPA50x, SPA51x, and SPA52x Series IP Phones Fixed in — No fix listed CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:spa_501g_firmware:*:sr1:*:*:*:*:*:* | up to 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:spa_501g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:spa_502g_firmware:*:sr1:*:*:*:*:*:* | up to 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:spa_502g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:spa_504g_firmware:*:sr1:*:*:*:*:*:* | up to 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:spa_504g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:spa_508g_firmware:*:sr1:*:*:*:*:*:* | up to 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:spa_508g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:spa_509g_firmware:*:sr1:*:*:*:*:*:* | up to 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:spa_509g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:spa_501g_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:spa_501g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:spa_502g_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:spa_502g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:spa_504g_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:spa_504g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:spa_508g_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:spa_508g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:spa_509g_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:spa_509g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:spa_512g_firmware:*:sr1:*:*:*:*:*:* | up to 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:spa_512g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:spa_514g_firmware:*:sr1:*:*:*:*:*:* | up to 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:spa_514g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:spa_525g_firmware:*:sr1:*:*:*:*:*:* | up to 7.6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:spa_525g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:spa_512g_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:spa_512g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:spa_514g_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:spa_514g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:spa_525g_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:spa_525g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-12260
- 2026-10-03 Alias added: GHSA-x6rw-m9v7-ff3g
References
More Cisco Spa 501g Firmware vulnerabilities
- TI-2024-13377 Buffer overflow in Cisco Small Business IP Phones CVSS 3.1CRITICAL 9.8
- TI-2024-13379 Buffer overflow in Cisco Small Business IP Phones CVSS 3.1CRITICAL 9.8
- TI-2017-08998 Resource management flaw in Cisco Small Business SPA300, SPA500, and SPA51x Series IP… CVSS 3.0HIGH 7.5
- TI-2024-13378 Buffer overflow in Cisco Small Business IP Phones CVSS 3.1HIGH 7.5
Sources
- CVE-2017-12260 · CVE Program
- CVE-2017-12260 · NVD
- FIRST EPSS
- GHSA-x6rw-m9v7-ff3g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences