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URL: https://nvd.nist.gov/vuln/detail/CVE-2020-29557

⇱ NVD - CVE-2020-29557

  1. Vulnerabilities

CVE-2020-29557 Detail

Description

An issue was discovered on D-Link DIR-825 R1 devices through 3.0.1 before 2020-11-20. A buffer overflow in the web interface allows attackers to achieve pre-authentication remote code execution.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://shaqed.github.io/dlink/ CVE, MITRE Broken Link  Exploit  Third Party Advisory 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29557 CISA-ADP US Government Resource 
https://www.dlink.ru/ru/download2/5/19/2354/441/ CVE, MITRE Product 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
D-Link DIR-825 R1 Devices Buffer Overflow Vulnerability 11/03/2021 05/03/2022 Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer 👁 cwe source acceptance level
NIST   CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

20 change records found show changes

CVE Modified by CISA-ADP 6/16/2026 11:11:25 PM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2025-02-07T13:48:53.048965Z","id":"CVE-2020-29557","options":[{"exploitation":"active"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by MITRE 6/16/2026 11:11:25 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]

Modified Analysis by NIST 11/07/2025 5:03:20 PM

Action Type Old Value New Value
Added Reference Type 
CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29557 Types: US Government Resource

CVE Modified by CISA-ADP 10/21/2025 8:17:05 PM

Action Type Old Value New Value
Added Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29557

CVE Modified by CISA-ADP 10/21/2025 4:18:00 PM

Action Type Old Value New Value
Removed Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29557

CVE Modified by CISA-ADP 10/21/2025 3:18:30 PM

Action Type Old Value New Value
Added Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29557

Modified Analysis by NIST 3/14/2025 1:29:14 PM

Action Type Old Value New Value
Changed CPE Configuration 
AND
 OR
 cpe:2.3:h:dlink:dir-825/acf:f1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/ac:e:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/ac:e1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825:r1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/a:d1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/gf:gf:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:dlink:dir-825_r1_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.1


 
AND
 OR
 cpe:2.3:h:dlink:dir-825/acf:f1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/ac:e:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/ac:e1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825:r1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/a:d1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/gf:gf:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:dlink:dir-825_r1_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.1
Changed CPE Configuration 
AND
 OR
 cpe:2.3:h:dlink:dir-825/acf:f1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/ac:e:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/ac:e1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825:r1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/a:d1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/gf:gf:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:dlink:dir-825_r1_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.1


 
AND
 OR
 cpe:2.3:h:dlink:dir-825/acf:f1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/ac:e:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/ac:e1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825:r1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/a:d1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825/gf:gf:*:*:*:*:*:*:*
 OR
 *cpe:2.3:o:dlink:dir-825_r1_firmware:*:*:*:*:*:*:*:* versions from (including) 3.0.1

CVE Modified by CISA-ADP 2/07/2025 9:15:48 AM

Action Type Old Value New Value
Added CVSS V3.1 
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added CWE 
CWE-119

Modified Analysis by NIST 2/06/2025 10:20:20 AM

Action Type Old Value New Value
Changed Reference Type 
https://shaqed.github.io/dlink/ Exploit, Third Party Advisory


 
https://shaqed.github.io/dlink/ Broken Link, Exploit, Third Party Advisory
Changed Reference Type 
https://shaqed.github.io/dlink/ Exploit, Third Party Advisory


 
https://shaqed.github.io/dlink/ Broken Link, Exploit, Third Party Advisory
Changed Reference Type 
https://www.dlink.ru/ru/download2/5/19/2354/441/ Vendor Advisory


 
https://www.dlink.ru/ru/download2/5/19/2354/441/ Product
Changed Reference Type 
https://www.dlink.ru/ru/download2/5/19/2354/441/ Vendor Advisory


 
https://www.dlink.ru/ru/download2/5/19/2354/441/ Product

CVE Modified by CVE 11/21/2024 12:24:11 AM

Action Type Old Value New Value
Added Reference 
https://shaqed.github.io/dlink/
Added Reference 
https://www.dlink.ru/ru/download2/5/19/2354/441/

CVE Modified by MITRE 5/14/2024 3:01:42 AM

Action Type Old Value New Value

Reanalysis by NIST 4/27/2023 10:31:11 AM

Action Type Old Value New Value
Changed CPE Configuration 
AND
 OR
 *cpe:2.3:o:d-link:dir-825_r1_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.0.1
 OR
 cpe:2.3:h:dlink:dir-825:r1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/a:d1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/ac:e:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/ac:e1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/acf:f1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/gf:gf:*:*:*:*:*:*:*


 
AND
 OR
 *cpe:2.3:o:dlink:dir-825_r1_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.0.1
 OR
 cpe:2.3:h:dlink:dir-825:r1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/a:d1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/ac:e:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/ac:e1a:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/acf:f1:*:*:*:*:*:*:*
 cpe:2.3:h:dlink:dir-825\/gf:gf:*:*:*:*:*:*:*

CPE Deprecation Remap by NIST 4/26/2023 2:55:30 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:h:d-link:dir-825:r1:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:h:dlink:dir-825:r1:*:*:*:*:*:*:*

CPE Deprecation Remap by NIST 4/26/2023 2:55:30 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:h:d-link:dir-825/acf:f1:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:h:dlink:dir-825/acf:f1:*:*:*:*:*:*:*

CPE Deprecation Remap by NIST 4/26/2023 2:55:30 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:h:d-link:dir-825/ac:e1a:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:h:dlink:dir-825/ac:e1a:*:*:*:*:*:*:*

CPE Deprecation Remap by NIST 4/26/2023 2:55:30 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:h:d-link:dir-825/gf:gf:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:h:dlink:dir-825/gf:gf:*:*:*:*:*:*:*

CPE Deprecation Remap by NIST 4/26/2023 2:55:30 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:h:d-link:dir-825/ac:e:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:h:dlink:dir-825/ac:e:*:*:*:*:*:*:*

CPE Deprecation Remap by NIST 4/26/2023 2:55:30 PM

Action Type Old Value New Value
Changed CPE Configuration 
OR
 *cpe:2.3:h:d-link:dir-825/a:d1a:*:*:*:*:*:*:*


 
OR
 *cpe:2.3:h:dlink:dir-825/a:d1a:*:*:*:*:*:*:*

CWE Remap by NIST 7/12/2022 1:42:04 PM

Action Type Old Value New Value
Changed CWE 
CWE-120



CWE-119


Initial Analysis by NIST 2/12/2021 1:50:19 PM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added CVSS V2 
NIST (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Added CWE 
NIST CWE-120
Added CPE Configuration 
AND
 OR
 *cpe:2.3:o:d-link:dir-825_r1_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.0.1
 OR
 cpe:2.3:h:d-link:dir-825:r1:*:*:*:*:*:*:*
 cpe:2.3:h:d-link:dir-825\/a:d1a:*:*:*:*:*:*:*
 cpe:2.3:h:d-link:dir-825\/ac:e:*:*:*:*:*:*:*
 cpe:2.3:h:d-link:dir-825\/ac:e1a:*:*:*:*:*:*:*
 cpe:2.3:h:d-link:dir-825\/acf:f1:*:*:*:*:*:*:*
 cpe:2.3:h:d-link:dir-825\/gf:gf:*:*:*:*:*:*:*
Changed Reference Type 
https://shaqed.github.io/dlink/ No Types Assigned


 
https://shaqed.github.io/dlink/ Exploit, Third Party Advisory
Changed Reference Type 
https://www.dlink.ru/ru/download2/5/19/2354/441/ No Types Assigned


 
https://www.dlink.ru/ru/download2/5/19/2354/441/ Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2020-29557
NVD Published Date:
01/29/2021
NVD Last Modified:
06/16/2026
Source:
MITRE