How severe is CVE-2017-12219?

CVE-2017-12219 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-12219 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12219?

CVE-2017-12219 primarily affects Cisco Spa 301 Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-12219?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-12219 published?

CVE-2017-12219 was published on 2017-09-21 and last updated on 2026-06-17.

CVE-2017-12219

CVE-2017-12219 is a high-severity vulnerability in Cisco Spa 301 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Spa 301 Firmware
Published: 2017-09-21
Last modified: 2026-06-17

Description

A vulnerability in the handling of IP fragments for the Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to the inability to handle many large IP fragments for reassembly in a short duration. An attacker could exploit this vulnerability by sending a crafted stream of IP fragments to the targeted device. An exploit could allow the attacker to cause a DoS condition when the device unexpectedly reloads. Cisco Bug IDs: CSCve82586.

Frequently asked questions

What is CVE-2017-12219?: A vulnerability in the handling of IP fragments for the Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to the inability to handle many large IP fragments for reassembly in a short duration. An attacker could exploit this vulnerability by sending a crafted stream of IP fragments to the targeted device. An exploit could allow the attacker to cause a DoS condition when the device unexpectedly reloads. Cisco Bug IDs: CSCve82586.
How severe is CVE-2017-12219?: CVE-2017-12219 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-12219 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12219?: CVE-2017-12219 primarily affects Cisco Spa 301 Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-12219?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-12219 published?: CVE-2017-12219 was published on 2017-09-21 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:o:cisco:spa_301_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_303_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_500ds_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_500s_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_501g_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_502g_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_504g_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_508g_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_509g_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_512g_firmware:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:spa_514g_firmware:7.6.2:*:*:*:*:*:*:*

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