How severe is CVE-2021-44881?

CVE-2021-44881 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-44881 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44881?

CVE-2021-44881 primarily affects Dlink Dir-882 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-44881?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-44881 published?

CVE-2021-44881 was published on 2022-02-04 and last updated on 2026-06-17.

CVE-2021-44881

CVE-2021-44881 is a critical-severity vulnerability in Dlink Dir-882 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Dlink Dir-882 Firmware
Published: 2022-02-04
Last modified: 2026-06-17

Description

D-Link device DIR_882 DIR_882_FW1.30B06_Hotfix_02 was discovered to contain a command injection vulnerability in the twsystem function. This vulnerability allows attackers to execute arbitrary commands via a crafted HNAP1 POST request.

Frequently asked questions

What is CVE-2021-44881?: D-Link device DIR_882 DIR_882_FW1.30B06_Hotfix_02 was discovered to contain a command injection vulnerability in the twsystem function. This vulnerability allows attackers to execute arbitrary commands via a crafted HNAP1 POST request.
How severe is CVE-2021-44881?: CVE-2021-44881 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-44881 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44881?: CVE-2021-44881 primarily affects Dlink Dir-882 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-44881?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-44881 published?: CVE-2021-44881 was published on 2022-02-04 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:dlink:dir-882_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-882_firmware:1.30b06:hotfix_02_beta:*:*:*:*:*:*

More vulnerabilities in Dlink Dir-882 Firmware

CVE-2022-44807 — Critical (CVSS 9.8): D-Link DIR-882 1.10B02 and 1.20B06 is vulnerable to Buffer Overflow via webGetVarString.
CVE-2022-44806 — Critical (CVSS 9.8): D-Link DIR-882 1.10B02 and 1.20B06 is vulnerable to Buffer Overflow.
CVE-2022-44804 — Critical (CVSS 9.8): D-Link DIR-882 1.10B02 and1.20B06 is vulnerable to Buffer Overflow via the websRedirect function.
CVE-2022-28901 — Critical (CVSS 9.8): A command injection vulnerability in the component /SetTriggerLEDBlink/Blink of D-Link DIR882 DIR882A1_FW130B06 allows…
CVE-2022-28896 — Critical (CVSS 9.8): A command injection vulnerability in the component /setnetworksettings/SubnetMask of D-Link DIR882 DIR882A1_FW130B06…
CVE-2022-28895 — Critical (CVSS 9.8): A command injection vulnerability in the component /setnetworksettings/IPAddress of D-Link DIR882 DIR882A1_FW130B06…

All CVEs affecting Dlink Dir-882 Firmware →

Other CWE-77 (Command Injection) vulnerabilities

CVE-2026-23652 — Critical (CVSS 10.0): Improper neutralization of special elements used in a command ('command injection') in Microsoft Power Pages allows an…
CVE-2025-59818 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute arbitrary commands on the underlying system using the file…
CVE-2025-64093 — Critical (CVSS 10.0): Remote Code Execution vulnerability that allows unauthenticated attackers to inject arbitrary commands into the…
CVE-2025-64090 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute commands via the hostname of the device.
CVE-2025-61492 — Critical (CVSS 10.0): A command injection vulnerability in the execute_command function of terminal-controller-mcp 0.1.7 allows attackers to…
CVE-2025-10035 — Critical (CVSS 10.0): A deserialization vulnerability in the License Servlet of Fortra's GoAnywhere MFT allows an actor with a validly forged…

Browse all CWE-77 (Command Injection) vulnerabilities →