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TI-2017-09035 Aliases CVE-2017-12259GHSA-g746-47q2-f2cr

Memory corruption in Cisco Small Business SPA51x Series IP Phones

Priority LOW 37CWE-119Published · Updated

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 SPA51x 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 sending malformed SIP messages 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 SPA51x Series IP Phones that are running Cisco SPA51x Firmware Release 7.6.2SR1 or earlier. Cisco Bug IDs: CSCvc63982.

Why it matters now

EPSS 0.02297 83rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Cisco Small Business SPA51x Series IP PhonesCisco Small Business SPA51x Series IP Phones—No fix listedCNA
  • Cisco Small Business SPA51x Series IP Phones Vendor— Affected Cisco Small Business SPA51x Series IP Phones Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:cisco:small_business_ip_phone_firmware:*:sr1:*:*:*:*:*:*up to 7.6.2VulnerableCisco
cpe:2.3:h:cisco:small_business_ip_phone:spa510:*:*:*:*:*:*:*spa510Running onCisco
  • cpe:2.3:o:cisco:small_business_ip_phone_firmware:*:sr1:*:*:*:*:*:* Versions up to 7.6.2 Vulnerable ·Cisco
  • cpe:2.3:h:cisco:small_business_ip_phone:spa510:*:*:*:*:*:*:* Versions spa510 Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-12259
  2. 2026-10-03 Alias added: GHSA-g746-47q2-f2cr

References

Advisory 1

  • TI-2012-00319 Cisco Small Business IP phones with SPA 500 series firmware 7.4.9 and earlier do not… CVSS 2.0MEDIUM 5.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences