CVE-2021-27246

CVSS V2 High 7.9 CVSS V3 High 8
Description
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Archer A7 AC1750 1.0.15 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of MAC addresses by the tdpServer endpoint. A crafted TCP message can write stack pointers to the stack. An attacker can leverage this vulnerability to execute code in the context of the root user. Was ZDI-CAN-12306.
Overview
  • CVE ID
  • CVE-2021-27246
  • Assigner
  • zdi-disclosures@trendmicro.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-14T16:15:13
  • Last Modified Date
  • 2021-04-22T17:45:03
Weakness Enumerations
CWE URL
CWE-121 http://cwe.mitre.org/data/definitions/121.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:tp-link:ac1750_firmware:1.0.15:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:tp-link:ac1750:a7:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.9
  • Severity
  • HIGH
  • Exploitability Score
  • 5.5
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.1
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.zerodayinitiative.com/advisories/ZDI-21-215/ Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-27246
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27246
History
Created Old Value New Value Data Type Notes
2022-05-10 07:14:46 Added to TrackCVE
2022-12-06 01:56:14 2021-04-14T16:15Z 2021-04-14T16:15:13 CVE Published Date updated
2022-12-06 01:56:14 2021-04-22T17:45:03 CVE Modified Date updated
2022-12-06 01:56:14 Analyzed Vulnerability Status updated