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Ios Xe Sd Wan CVE-2021-1301

CRITICAL
Buffer Overflow (CWE-119)
2021-01-20 psirt@cisco.com
Buffer Overflow Cisco Ios Xe Sd Wan Sd Wan Firmware Sd Wan Vsmart Controller Firmware Catalyst Sd Wan Manager Sd Wan Vbond Orchestrator
9.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
CVE Published
Jan 20, 2021 - 20:15 nvd
CRITICAL 9.8

DescriptionNVD

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute 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 attacks against an affected device. Rated critical severity (CVSS 9.8), 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 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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CVE-2014-6332 HIGH POC
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CVE-2015-2426 HIGH POC
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CVE-2013-3918 HIGH POC
8.8
CVE-2017-11774 HIGH POC
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CVE-2013-3660 HIGH POC
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CVE-2017-6736 HIGH POC
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Same technique Buffer Overflow

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CVE-2017-7269 CRITICAL POC
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CVE-2015-5119 CRITICAL POC
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CVE-2015-3113 CRITICAL POC
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CVE-2011-2462 CRITICAL POC
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CVE-2009-0927 HIGH POC
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CVE-2012-1889 HIGH POC
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CVE-2017-11882 HIGH POC
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CVE-2010-3333 HIGH POC
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CVE-2021-1301 vulnerability details – vuln.today
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