How severe is CVE-2023-27078?

CVE-2023-27078 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-2023-27078 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-27078?

CVE-2023-27078 affects Tp-link Tl-mr3020 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-27078?

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-2023-27078 published?

CVE-2023-27078 was published on 2023-03-23 and last updated on 2026-06-17.

CVE-2023-27078

CVE-2023-27078 is a critical-severity vulnerability in Tp-link Tl-mr3020 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)
EPSS exploit prediction: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Tp-link Tl-mr3020 Firmware
Published: 2023-03-23
Last modified: 2026-06-17

Description

A command injection issue was found in TP-Link MR3020 v.1_150921 that allows a remote attacker to execute arbitrary commands via a crafted request to the tftp endpoint.

Frequently asked questions

What is CVE-2023-27078?: A command injection issue was found in TP-Link MR3020 v.1_150921 that allows a remote attacker to execute arbitrary commands via a crafted request to the tftp endpoint.
How severe is CVE-2023-27078?: CVE-2023-27078 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-2023-27078 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-27078?: CVE-2023-27078 affects Tp-link Tl-mr3020 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-27078?: 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-2023-27078 published?: CVE-2023-27078 was published on 2023-03-23 and last updated on 2026-06-17.

References

https://github.com/B2eFly/Router/blob/main/TPLINK/MR3020/1.md

Affected products (1)

cpe:2.3:o:tp-link:tl-mr3020_firmware:1.0:150921:*:*:*:*:*:*

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