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Ios Xe Sd Wan CVE-2021-1274

HIGH
Buffer Overflow (CWE-119)
2021-01-20 psirt@cisco.com
Buffer Overflow Cisco Denial Of Service Ios Xe Sd Wan Sd Wan Firmware Sd Wan Vsmart Controller Firmware Catalyst Sd Wan Manager Sd Wan Vbond Orchestrator
8.6
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
8.6 HIGH
AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

1
CVE Published
Jan 20, 2021 - 20:15 nvd
HIGH 8.6

DescriptionNVD

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.

AnalysisAI

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. 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. Affected products include: Cisco Ios Xe Sd-Wan, Cisco Sd-Wan Firmware, Cisco Sd-Wan Vsmart Controller Firmware, Cisco Catalyst Sd-Wan Manager, Cisco Sd-Wan Vbond Orchestrator.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.

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Same weakness CWE-119 – Buffer Overflow

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Same technique Buffer Overflow

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CVE-2021-1274 vulnerability details – vuln.today
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