CVE-2019-1635
HIGHEPSS 78th pctlDescription
A vulnerability in the call-handling functionality of Session Initiation Protocol (SIP) Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to incomplete error handling when XML data within a SIP packet is parsed. An attacker could exploit this vulnerability by sending a SIP packet that contains a malicious XML payload to an affected phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Elevated risk: more likely to be exploited than 78% of all known CVEs.
References
Related Vulnerabilities
Other CWE-399 (Resource Management Errors) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2009-3103 | High | 10.0 | 90% | - | - |
| CVE-2009-0075 | High | 9.3 | 85% | - | - |
| CVE-2005-1790 | Low | 2.6 | 83% | - | - |
| CVE-2010-0806 | High | 8.8 | 82% | KEV | - |
| CVE-2009-2526 | High | 7.8 | 82% | - | - |
| CVE-2015-1868 | High | 7.8 | 82% | - | Fix |
Common questions
How do I fix CVE-2019-1635?
No published fix for CVE-2019-1635 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2019-1635 being actively exploited?
Not that we know of. CVE-2019-1635 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.0% is the estimated probability that it will be exploited in the next 30 days. That is higher than 78% of all scored CVEs.
How severe is CVE-2019-1635?
CVE-2019-1635 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.