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Vulnerability record · CVE-2021-44880 · published 4 February 2022

CVE-2021-44880: Dlink dir-878 firmware command injection vulnerability

Dlink · Dir 878 Firmware

D-Link devices DIR_878 DIR_878_FW1.30B08_Hotfix_02 and DIR_882 DIR_882_FW1.30B06_Hotfix_02 were discovered to contain a command injection vulnerability in the system function. This vulnerability allows attackers to execute arbitrary commands via a crafted HNAP1 POST request.

9.8 CVSS 3.1 Critical EPSS 4.0% · top 9.9% CWE-77 · Command injection
9.8CVSS 3.1 base score, v2 10.0
4.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

D-Link devices DIR_878 DIR_878_FW1.30B08_Hotfix_02 and DIR_882 DIR_882_FW1.30B06_Hotfix_02 were discovered to contain a command injection vulnerability in the system function. This vulnerability allows attackers to execute arbitrary commands via a crafted HNAP1 POST request.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/pjqwudi/my_vuln/blob/main/D-link/vuln_2/2.md Broken Link
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10286 Vendor Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10287 Vendor Advisory
https://www.dlink.com/en/security-bulletin/ Vendor Advisory
https://github.com/pjqwudi/my_vuln/blob/main/D-link/vuln_2/2.md Broken Link
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10286 Vendor Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10287 Vendor Advisory
https://www.dlink.com/en/security-bulletin/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-27720Dlink dir-878 firmware out-of-bounds write vulnerabilityD-Link DIR878 1.30B08 was discovered to contain a stack overflow in the sub_48d630 function. This vulnerability allows attackers to cause a Denial of…EPSS 1.4%9.8CVE-2023-24798Dlink dir-878 firmware out-of-bounds write vulnerabilityD-Link DIR878 DIR_878_FW120B05 was discovered to contain a stack overflow in the sub_475FB0 function. This vulnerability allows attackers to cause a …EPSS 1.1%9.8CVE-2023-24799Dlink dir-878 firmware out-of-bounds write vulnerabilityD-Link DIR878 DIR_878_FW120B05 was discovered to contain a stack overflow in the sub_48AF78 function. This vulnerability allows attackers to cause a …EPSS 1.1%9.8CVE-2023-24800Dlink dir-878 firmware out-of-bounds write vulnerabilityD-Link DIR878 DIR_878_FW120B05 was discovered to contain a stack overflow in the sub_495220 function. This vulnerability allows attackers to cause a …EPSS 1.3%9.8CVE-2022-44804Dlink dir-882 firmware out-of-bounds write vulnerabilityD-Link DIR-882 1.10B02 and1.20B06 is vulnerable to Buffer Overflow via the websRedirect function.EPSS 1.3%9.8CVE-2022-44806Dlink dir-882 firmware out-of-bounds write vulnerabilityD-Link DIR-882 1.10B02 and 1.20B06 is vulnerable to Buffer Overflow.EPSS 1.2%9.8CVE-2022-44807Dlink dir-882 firmware out-of-bounds write vulnerabilityD-Link DIR-882 1.10B02 and 1.20B06 is vulnerable to Buffer Overflow via webGetVarString.EPSS 1.3%9.8CVE-2022-44202Dlink dir-878 firmware out-of-bounds write vulnerabilityD-Link DIR878 1.02B04 and 1.02B05 are vulnerable to Buffer Overflow.EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2021-44880), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.