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CVE-2015-4199

nvd nist
Published: Jun 27, 2015Modified: May 6, 2026

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7.1
Vector
AV:N/AC:M/Au:N/C:N/I:N/A:C
Exploitability: 8.6 / Impact: 6.9
Source: NVD

Description

Race condition in the IPv6-to-IPv4 functionality in Cisco IOS 15.3S in the Performance Routing Engine (PRE) module on UBR devices allows remote attackers to cause a denial of service (NULL pointer free and module crash) by triggering intermittent connectivity with many IPv6 CPE devices, aka Bug ID CSCug47366.

Affected (1)

Products: Cisco: Ios
Cisco
1 product
Ios
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Ios
Version 15.3s

Related CWEs

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References (6)

Source: psirt@cisco.com
Vendor Advisory
Source: psirt@cisco.com
Third Party AdvisoryVDB Entry
Source: psirt@cisco.com
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry

Timeline

No history available yet.