CVE-2015-4200 describes a memory leak vulnerability in the IPv6-to-IPv4 functionality of Cisco IOS 15.3S, specifically within the Performance Routing Engine (PRE) module on UBR devices. This flaw allows remote attackers to trigger a denial of service by causing excessive memory consumption during CPE negotiation errors. With a CVSS score of 7.8, this vulnerability is considered high severity, requiring no authentication or complex attack vectors to achieve a complete denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
15.3\(3\)sCPE matchmatch criteria | cpe:2.3:o:cisco:ios:15.3\(3\)s:*:*:*:*:*:*:* | ||
15.3sCPE matchmatch criteria | cpe:2.3:o:cisco:ios:15.3s:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C
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No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.