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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…
Medium5.4EPSS 0.98%
- Published
- Updated
- Reserved
- Assigned by
- cisco
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.4 | AV:N/AC:H/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 0.98% · top 38% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Weakness
Affected products
n/a
- affected n/a
References (5)
- cisco-isr-cve20143347-dos(95558) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://tools.cisco.com/security/center/viewAlert.x?alertId=35453 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1030772 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 20140827 Cisco 1800 Series ISR ISDN Basic Rate Interface Denial of Service Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 69439 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2014-3347)Record last updated .