CVE-2021-29379

Name: CVE-2021-29379
Creator: NVD / NIST
Published: 2021-04-12T05:15:12.503+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 3.50%

Last modified Jun 17, 2026

CVE-2021-29379 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered on D-Link DIR-802 A1 devices through 1.00b05. Universal Plug and Play (UPnP) is enabled by default on port 1900. EPSS estimates a 3.50% chance of exploitation in the next 30 days.

Description

An issue was discovered on D-Link DIR-802 A1 devices through 1.00b05. Universal Plug and Play (UPnP) is enabled by default on port 1900. An attacker can perform command injection by injecting a payload into the Search Target (ST) field of the SSDP M-SEARCH discover packet. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.50%

87.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Dlink	Dir-802 Firmware	<= 1.00b05

References

https://cool-y.github.io/2021/03/02/DIR-802-OS-Command-InjectionExploit, Third Party Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10206Vendor Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://cool-y.github.io/2021/03/02/DIR-802-OS-Command-InjectionExploit, Third Party Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10206Vendor Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory

Timeline

Published: Apr 12, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29379?

How severe is CVE-2021-29379?

CVE-2021-29379 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.50% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29379?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-29379?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST