CVE-2019-1749Cisco Aggregation Services Router 900 Route Switch Processor 3 OSPFv2 Denial of Service Vulnerability
- 7.4HighCVSS base score
- 0.60%Exploitation in 30 daysEPSS · top 51% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability in the ingress traffic validation of Cisco IOS XE Software for Cisco Aggregation Services Router (ASR) 900 Route Switch Processor 3 (RSP3) could allow an unauthenticated, adjacent attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability exists because the software insufficiently validates ingress traffic on the ASIC used on the RSP3 platform. An attacker could exploit this vulnerability by sending a malformed OSPF version 2 (OSPFv2) message to an affected device. A successful exploit could allow the attacker to cause a reload of the iosd process, triggering a reload of the affected device and resulting in a DoS condition.
Timeline
ID reserved
By cisco
- 4 months later
· 4 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.0 | High7.4 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.4 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.60% · top 51% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Affected products
- affected 3.13.6aS
- affected 3.16.0aS
- affected 3.16.1aS
- affected 3.16.2aS
- affected 3.16.3aS
- affected 3.16.4S
- affected 3.16.4bS
- affected 3.16.4gS
- affected 3.16.5S
- affected 3.16.4cS
- affected 3.16.4dS
- affected 3.16.4eS
- affected 3.16.6S
- affected 3.16.5aS
- affected 3.16.7S
- affected 3.16.6bS
- affected 3.16.7bS
- affected 3.16.8S
- affected 3.17.0S
- affected 3.17.1S
- affected 3.17.2S
- affected 3.17.3S
- affected 3.17.4S
- affected 16.5.1
- affected 16.5.2
- affected 16.5.3
- affected 3.18.0S
- affected 3.18.1S
- affected 3.18.2S
- affected 3.18.3S
- affected 3.18.4S
- affected 3.18.0SP
- affected 3.18.1SP
- affected 3.18.1gSP
- affected 3.18.1bSP
- affected 3.18.2SP
- affected 3.18.1hSP
- affected 3.18.1iSP
- affected 3.18.3SP
- affected 3.18.4SP
- and 9 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
References2
- 20190327 Cisco Aggregation Services Router 900 Route Switch Processor 3 OSPFv2 Denial of Service Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 107615 (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)
- EUVD EUVD-2019-10306 (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://cveledger.app/cve/CVE-2019-1749)Record last updated .