How severe is CVE-2020-25218?

CVE-2020-25218 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-2020-25218 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25218?

CVE-2020-25218 primarily affects Grandstream Grp2612 Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-25218?

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-2020-25218 published?

CVE-2020-25218 was published on 2021-03-29 and last updated on 2026-06-17.

CVE-2020-25218

CVE-2020-25218 is a critical-severity vulnerability in Grandstream Grp2612 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Grandstream Grp2612 Firmware
Published: 2021-03-29
Last modified: 2026-06-17

Description

Grandstream GRP261x VoIP phone running firmware version 1.0.3.6 (Base) allow Authentication Bypass in its administrative web interface.

Frequently asked questions

What is CVE-2020-25218?: Grandstream GRP261x VoIP phone running firmware version 1.0.3.6 (Base) allow Authentication Bypass in its administrative web interface.
How severe is CVE-2020-25218?: CVE-2020-25218 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-2020-25218 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25218?: CVE-2020-25218 primarily affects Grandstream Grp2612 Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-25218?: 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-2020-25218 published?: CVE-2020-25218 was published on 2021-03-29 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:o:grandstream:grp2612_firmware:1.0.3.6:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:grp2612p_firmware:1.0.3.6:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:grp2612w_firmware:1.0.3.6:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:grp2613_firmware:1.0.3.6:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:grp2614_firmware:1.0.3.6:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:grp2615_firmware:1.0.3.6:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:grp2616_firmware:1.0.3.6:*:*:*:*:*:*:*

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