CVE-2019-12646 describes a denial-of-service vulnerability in Cisco IOS XE Software, specifically within the Network Address Translation (NAT) Session Initiation Protocol (SIP) Application Layer Gateway (ALG) feature. An unauthenticated, remote attacker can exploit this by sending specially crafted SIP packets to UDP port 5060 through a device performing NAT for SIP, causing the device to reload. This vulnerability has a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
15.4\(3\)sCPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:15.4\(3\)s:*:*:*:*:*:*:* | ||
15.5\(3\)sCPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:15.5\(3\)s:*:*:*:*:*:*:* | ||
15.6\(1\)sCPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:15.6\(1\)s:*:*:*:*:*:*:* | ||
16.3.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.3.1:*:*:*:*:*:*:* | ||
16.4.1CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.4.1:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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