High severity8.6NVD Advisory· Published Jan 20, 2021· Updated Jun 17, 2026
CVE-2021-1274
CVE-2021-1274
Description
Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
16- cpe:2.3:a:cisco:catalyst_sd-wan_manager:-:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:-:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe_sd-wan:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:sd-wan_firmware:18.3.5:*:*:*:*:*:*:*+ 9 more
- cpe:2.3:o:cisco:sd-wan_firmware:18.3.5:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:18.3.8:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:18.4.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:18.4.4:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:18.4.5:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:19.2.0:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:19.2.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:19.2.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:19.2.99:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_firmware:20.1.0:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:sd-wan_vsmart_controller_firmware:*:*:*:*:*:*:*:*
- Range: n/a
Patches
Vulnerability mechanics
References
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