How severe is CVE-2021-42232?

CVE-2021-42232 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-2021-42232 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42232?

CVE-2021-42232 affects Tp-link Archer A7 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42232?

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-2021-42232 published?

CVE-2021-42232 was published on 2022-08-23 and last updated on 2026-07-05.

CVE-2021-42232

CVE-2021-42232 is a critical-severity vulnerability in Tp-link Archer A7 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Tp-link Archer A7 Firmware
Published: 2022-08-23
Last modified: 2026-07-05

Description

TP-Link Archer A7 Archer A7(US)_V5_210519 is affected by a command injection vulnerability in /usr/bin/tddp. The vulnerability is caused by the program taking part of the received data packet as part of the command. This will cause an attacker to execute arbitrary commands on the router.

Frequently asked questions

What is CVE-2021-42232?: TP-Link Archer A7 Archer A7(US)_V5_210519 is affected by a command injection vulnerability in /usr/bin/tddp. The vulnerability is caused by the program taking part of the received data packet as part of the command. This will cause an attacker to execute arbitrary commands on the router.
How severe is CVE-2021-42232?: CVE-2021-42232 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-2021-42232 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42232?: CVE-2021-42232 affects Tp-link Archer A7 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42232?: 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-2021-42232 published?: CVE-2021-42232 was published on 2022-08-23 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:o:tp-link:archer_a7_firmware:210519:*:*:*:*:*:*:*

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