CVE-2020-29557

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.557 · 99 %ileEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

55.7% (99th) EPSS

CVSS 10 · high

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2021-11-03remediate by 2022-05-03

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-26

D-Link DIR-825 R1 Devices Buffer Overflow Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-120US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

affected products (8)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
D-Link Corp. DIR-825 A D1≤ 3.0.1fstec_bduRU
D-Link Corp. DIR-825 AC E≤ 3.0.1fstec_bduRU
D-Link Corp. DIR-825 AC E1A≤ 3.0.1fstec_bduRU
D-Link Corp. DIR-825 ACF F1≤ 3.0.1fstec_bduRU
D-Link Corp. DIR-825 GF≤ 3.0.1fstec_bduRU
D-Link Corp. DIR-825 R1≤ 3.0.1fstec_bduRU
dlink dir-825 r1 firmware≤ 3.0.1nvdUScpe:2.3:o:dlink:dir-825_r1_firmware:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-01-29modified 2026-06-17

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Related entries.

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+21004 more

references (8)

External citations — patches, advisories, analysis.

https://nvd.nist.gov/vuln/detail/CVE-2020-29557 cnnvd
https://shaqed.github.io/dlink/cnnvd
https://www.dlink.ru/ru/download2/5/19/2354/441/cnnvd
https://shaqed.github.io/dlink/enisa_euvd
https://www.dlink.ru/ru/download2/5/19/2354/441/enisa_euvd
https://shaqed.github.io/dlink/Broken LinkExploitThird Party Advisorynvd
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29557US Government Resourcenvd
https://www.dlink.ru/ru/download2/5/19/2354/441/Productnvd

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