CVE-2014-3347

medium

Description

Cisco IOS 15.1(4)M2 on Cisco 1800 ISR devices, when the ISDN Basic Rate Interface is enabled, allows remote attackers to cause a denial of service (device hang) by leveraging knowledge of the ISDN phone number to trigger an interrupt timer collision during entropy collection, leading to an invalid state of the hardware encryption module, aka Bug ID CSCul77897.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/95558

http://www.securitytracker.com/id/1030772

http://www.securityfocus.com/bid/69439

http://tools.cisco.com/security/center/viewAlert.x?alertId=35453

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3347

Details

Source: Mitre, NVD

Published: 2014-08-28

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5.4

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00458