How severe is CVE-2021-27825?

CVE-2021-27825 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-27825 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27825?

CVE-2021-27825 affects Mercurycom Mac1200r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27825?

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

When was CVE-2021-27825 published?

CVE-2021-27825 was published on 2023-05-29 and last updated on 2026-06-17.

CVE-2021-27825

CVE-2021-27825 is a high-severity vulnerability in Mercurycom Mac1200r Firmware with a CVSS 3.x base score of 7.5. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Mercurycom Mac1200r Firmware
Published: 2023-05-29
Last modified: 2026-06-17

Description

A directory traversal vulnerability on Mercury MAC1200R devices allows attackers to read arbitrary files via a web-static/ URL.

Frequently asked questions

What is CVE-2021-27825?: A directory traversal vulnerability on Mercury MAC1200R devices allows attackers to read arbitrary files via a web-static/ URL.
How severe is CVE-2021-27825?: CVE-2021-27825 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-27825 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27825?: CVE-2021-27825 affects Mercurycom Mac1200r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27825?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-27825 published?: CVE-2021-27825 was published on 2023-05-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:mercurycom:mac1200r_firmware:*:*:*:*:*:*:*:*

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