CVE-2024-20376

HIGH
Published May 1, 2024 Modified Jan 5, 2026 CWE-787

Description

A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a DoS condition. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to cause the affected device to reload.

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CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor Product
cisco video_phone_8875_firmware
cisco video_phone_8875
cisco ip_phone_6821_with_multiplatform_firmware
cisco ip_phone_6821
cisco ip_phone_6841_with_multiplatform_firmware
cisco ip_phone_6841
cisco ip_phone_6851_with_multiplatform_firmware
cisco ip_phone_6851
cisco ip_phone_6861_with_multiplatform_firmware
cisco ip_phone_6861
cisco ip_phone_6871_with_multiplatform_firmware
cisco ip_phone_6871
cisco ip_phone_7811_with_multiplatform_firmware
cisco ip_phone_7811
cisco ip_phone_7821_with_multiplatform_firmware
cisco ip_phone_7821
cisco ip_phone_7832_with_multiplatform_firmware
cisco ip_phone_7832
cisco ip_phone_7841_with_multiplatform_firmware
cisco ip_phone_7841
cisco ip_phone_7861_with_multiplatform_firmware
cisco ip_phone_7861
cisco ip_phone_8811_with_multiplatform_firmware
cisco ip_phone_8811
cisco ip_phone_8832_with_multiplatform_firmware
cisco ip_phone_8832
cisco ip_phone_8841_with_multiplatform_firmware
cisco ip_phone_8841
cisco ip_phone_8845_with_multiplatform_firmware
cisco ip_phone_8845
cisco ip_phone_8851_with_multiplatform_firmware
cisco ip_phone_8851
cisco ip_phone_8861_with_multiplatform_firmware
cisco ip_phone_8861
cisco ip_phone_8865_with_multiplatform_firmware
cisco ip_phone_8865

References

Frequently Asked Questions

What is CVE-2024-20376? +
A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a DoS condition. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to cause the affected device to reload. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2024-20376? +
CVE-2024-20376 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-20376? +
CVE-2024-20376 affects products from cisco, specifically: ip_phone_6821, ip_phone_6821_with_multiplatform_firmware, ip_phone_6841, ip_phone_6841_with_multiplatform_firmware, ip_phone_6851, ip_phone_6851_with_multiplatform_firmware, ip_phone_6861, ip_phone_6861_with_multiplatform_firmware, ip_phone_6871, ip_phone_6871_with_multiplatform_firmware, ip_phone_7811, ip_phone_7811_with_multiplatform_firmware, ip_phone_7821, ip_phone_7821_with_multiplatform_firmware, ip_phone_7832, ip_phone_7832_with_multiplatform_firmware, ip_phone_7841, ip_phone_7841_with_multiplatform_firmware, ip_phone_7861, ip_phone_7861_with_multiplatform_firmware, ip_phone_8811, ip_phone_8811_with_multiplatform_firmware, ip_phone_8832, ip_phone_8832_with_multiplatform_firmware, ip_phone_8841, ip_phone_8841_with_multiplatform_firmware, ip_phone_8845, ip_phone_8845_with_multiplatform_firmware, ip_phone_8851, ip_phone_8851_with_multiplatform_firmware, ip_phone_8861, ip_phone_8861_with_multiplatform_firmware, ip_phone_8865, ip_phone_8865_with_multiplatform_firmware, video_phone_8875, video_phone_8875_firmware. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-20376? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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