How severe is CVE-2017-6630?

CVE-2017-6630 has a CVSS 3.x base score of 5.3, rated medium 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 low.

Is CVE-2017-6630 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6630?

CVE-2017-6630 affects Cisco Ip Phone 8800 Series Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-6630?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-6630 published?

CVE-2017-6630 was published on 2017-05-22 and last updated on 2026-06-17.

CVE-2017-6630

CVE-2017-6630 is a medium-severity vulnerability in Cisco Ip Phone 8800 Series Firmware with a CVSS 3.x base score of 5.3. 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: Medium (CVSS 3.x base score 5.3)
CVSS v2: 7.8
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Ip Phone 8800 Series Firmware
Published: 2017-05-22
Last modified: 2026-06-17

Description

A vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IP Phone 8851 11.0(0.1) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to an abnormal SIP message. An attacker could exploit this vulnerability by manipulating the CANCEL packet. An exploit could allow the attacker to cause a disruption of service to the phone. Cisco Bug IDs: CSCvc34795.

Frequently asked questions

What is CVE-2017-6630?: A vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IP Phone 8851 11.0(0.1) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to an abnormal SIP message. An attacker could exploit this vulnerability by manipulating the CANCEL packet. An exploit could allow the attacker to cause a disruption of service to the phone. Cisco Bug IDs: CSCvc34795.
How severe is CVE-2017-6630?: CVE-2017-6630 has a CVSS 3.x base score of 5.3, rated medium 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 low.
Is CVE-2017-6630 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6630?: CVE-2017-6630 affects Cisco Ip Phone 8800 Series Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-6630?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-6630 published?: CVE-2017-6630 was published on 2017-05-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:cisco:ip_phone_8800_series_firmware:11.0\(0.1\):*:*:*:*:*:*:*

More vulnerabilities in Cisco Ip Phone 8800 Series Firmware

CVE-2016-1403 — High (CVSS 7.8): CISCO IP 8800 phones with software 11.0.1 and earlier allow local users to gain privileges for OS command execution via…
CVE-2016-1479 — High (CVSS 7.5): Cisco IP Phone 8800 devices with software 11.0(1) allow remote attackers to cause a denial of service (memory…
CVE-2016-1421 — High (CVSS 7.5): A vulnerability in the web application for Cisco IP Phones could allow an unauthenticated, remote attacker to execute…
CVE-2015-6360 — High (CVSS 7.5): The encryption-processing feature in Cisco libSRTP before 1.5.3 allows remote attackers to cause a denial of service…
CVE-2016-1435 — High (CVSS 7.0): Cisco 8800 phones with software 11.0(1) do not properly enforce mounted-filesystem permissions, which allows local…
CVE-2017-12305 — Medium (CVSS 6.7): A vulnerability in the debug interface of Cisco IP Phone 8800 series could allow an authenticated, local attacker to…

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Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →