CVE-2021-40423

CVSS V2 High 7.8 CVSS V3 High 7.5
Description
A denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A specially-crafted series of HTTP requests can lead to denial of service. An attacker can send an HTTP request to trigger this vulnerability.
Overview
  • CVE ID
  • CVE-2021-40423
  • Assigner
  • talos-cna@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-01-28T20:15:12
  • Last Modified Date
  • 2022-07-28T18:03:32
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:reolink:rlc-410w_firmware:3.0.0.136_20121102:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:reolink:rlc-410w:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.8
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1432 Broken Link Technical Description Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1432 Exploit Technical Description Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-40423
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40423
History
Created Old Value New Value Data Type Notes
2022-04-20 17:01:43 Added to TrackCVE
2022-12-06 08:02:16 2022-01-28T20:15Z 2022-01-28T20:15:12 CVE Published Date updated
2022-12-06 08:02:16 2022-07-28T18:03:32 CVE Modified Date updated
2022-12-06 08:02:16 Analyzed Vulnerability Status updated