CVE-2014-3347
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.
Key facts
- CVSS score
- 5.4 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:H/Au:N/C:N/I:N/A:C- Weakness (CWE)
- CWE-399
- EPSS score
- 1.0% (62th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2014-3360)
- Published
- August 28, 2014
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2014-3360 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- cisco / 1801 integrated service router
- cisco / 1802 integrated service router
- cisco / 1803 integrated service router
- cisco / 1811 integrated service router
- cisco / 1812 integrated service router
- cisco / 1841 integrated service router
- cisco / 1861 integrated service router
- cisco / ios
References
- http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3347(Vendor Advisory)
- http://tools.cisco.com/security/center/viewAlert.x?alertId=35453(Vendor Advisory)
- http://www.securityfocus.com/bid/69439
- http://www.securitytracker.com/id/1030772
- https://exchange.xforce.ibmcloud.com/vulnerabilities/95558
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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