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A860R Firmware CVE-2022-37840

CRITICAL
Classic Buffer Overflow (CWE-120)
2022-09-06 cve@mitre.org
Buffer Overflow A860R Firmware
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
Sep 06, 2022 - 17:15 nvd
CRITICAL 9.8

DescriptionNVD

In TOTOLINK A860R V4.1.2cu.5182_B20201027, the main function in downloadfile.cgi has a buffer overflow vulnerability.

AnalysisAI

In TOTOLINK A860R V4.1.2cu.5182_B20201027, the main function in downloadfile.cgi has a buffer overflow vulnerability. 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 Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. In TOTOLINK A860R V4.1.2cu.5182_B20201027, the main function in downloadfile.cgi has a buffer overflow vulnerability. Affected products include: Totolink A860R Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.

More in A860R Firmware

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CVE-2022-40475 CRITICAL POC
9.8 Sep 29

TOTOLINK A860R V4.1.2cu.5182_B20201027 was discovered to contain a command injection via the component /cgi-bin/download
CVE-2022-25083 CRITICAL POC
9.8 Feb 24

TOTOLink A860R V4.1.2cu.5182_B20201027 was discovered to contain a command injection vulnerability in the "Main" functio
CVE-2022-36614 HIGH POC
7.8 Aug 29

TOTOLINK A860R V4.1.2cu.5182_B20201027 was discovered to contain a hardcoded password for root at /etc/shadow.sample. Ra
CVE-2022-37843 CRITICAL
9.8 Sep 06

In TOTOLINK A860R V4.1.2cu.5182_B20201027 in cstecgi.cgi, the acquired parameters are directly put into the system for e
CVE-2022-37842 CRITICAL
9.8 Sep 06

In TOTOLINK A860R V4.1.2cu.5182_B20201027, the parameters in infostat.cgi are not filtered, causing a buffer overflow vu
CVE-2022-37839 CRITICAL
9.8 Sep 06

TOTOLINK A860R V4.1.2cu.5182_B20201027 is vulnerable to Buffer Overflow via Cstecgi.cgi. Rated critical severity (CVSS 9
CVE-2022-37841 HIGH
7.5 Sep 06

In TOTOLINK A860R V4.1.2cu.5182_B20201027 there is a hard coded password for root in /etc/shadow.sample. Rated high seve

Same weakness CWE-120 – Classic Buffer Overflow

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CVE-2017-15222 CRITICAL POC
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CVE-2012-2763 HIGH POC
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Same technique Buffer Overflow

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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-2022-37840 vulnerability details – vuln.today
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