CVE-2019-1752
Cisco IOS and IOS XE Software ISDN Interface Denial of Service Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- cisco
Description
A vulnerability in the ISDN functions of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of specific values in the Q.931 information elements. An attacker could exploit this vulnerability by calling the affected device with specific Q.931 information elements being present. An exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.0 | High8.6 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% of all CVEs (5 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.
Weakness
Affected products
Cisco · Cisco IOS and IOS XE Software
- affected 3.8.0S
- affected 3.8.1S
- affected 3.8.2S
- affected 3.9.1S
- affected 3.9.0S
- affected 3.9.2S
- affected 3.9.1aS
- affected 3.9.0aS
- affected 3.10.0S
- affected 3.10.1S
- affected 3.10.2S
- affected 3.10.3S
- affected 3.10.4S
- affected 3.10.5S
- affected 3.10.6S
- affected 3.10.2aS
- affected 3.10.2tS
- affected 3.10.7S
- affected 3.10.8S
- affected 3.10.8aS
- affected 3.10.9S
- affected 3.10.10S
- affected 3.11.1S
- affected 3.11.2S
- affected 3.11.0S
- affected 3.11.3S
- affected 3.11.4S
- affected 3.12.0S
- affected 3.12.1S
- affected 3.12.2S
- affected 3.12.3S
- affected 3.12.0aS
- affected 3.12.4S
- affected 3.13.0S
- affected 3.13.1S
- affected 3.13.2S
- affected 3.13.3S
- affected 3.13.4S
- affected 3.13.5S
- affected 3.13.2aS
- and 90 more
What to do
Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
References (2)
- 20190327 Cisco IOS and IOS XE Software ISDN Interface Denial of Service Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 107589 (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-2019-1752)Record last updated .