How severe is CVE-2020-5762?

CVE-2020-5762 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 none, integrity none, and availability high.

Is CVE-2020-5762 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5762?

CVE-2020-5762 primarily affects Grandstream Ht801 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-5762?

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-2020-5762 published?

CVE-2020-5762 was published on 2020-07-29 and last updated on 2026-06-17.

CVE-2020-5762

CVE-2020-5762 is a high-severity vulnerability in Grandstream Ht801 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Grandstream Ht801 Firmware
Published: 2020-07-29
Last modified: 2026-06-17

Description

Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to a denial of service attack against the TR-069 service. An unauthenticated remote attacker can stop the service due to a NULL pointer dereference in the TR-069 service. This condition is triggered due to mishandling of the HTTP Authentication field.

Frequently asked questions

What is CVE-2020-5762?: Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to a denial of service attack against the TR-069 service. An unauthenticated remote attacker can stop the service due to a NULL pointer dereference in the TR-069 service. This condition is triggered due to mishandling of the HTTP Authentication field.
How severe is CVE-2020-5762?: CVE-2020-5762 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 none, integrity none, and availability high.
Is CVE-2020-5762 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5762?: CVE-2020-5762 primarily affects Grandstream Ht801 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-5762?: 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-2020-5762 published?: CVE-2020-5762 was published on 2020-07-29 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:grandstream:ht801_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:ht802_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:ht812_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:ht814_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:ht818_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:ht813_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Grandstream Ht801 Firmware

CVE-2021-37915 — High (CVSS 8.8): An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From the limited…
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CVE-2020-5763 — High (CVSS 8.8): Grandstream HT800 series firmware version 1.0.17.5 and below contain a backdoor in the SSH service. An authenticated…
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