CVE-2024-20378

A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to retrieve sensitive information from an affected device. This vulnerability is due to a lack of authentication for specific endpoints of the web-based management interface on an affected device. An attacker could exploit this vulnerability by connecting to the affected device. A successful exploit could allow the attacker to gain unauthorized access to the device, enabling the recording of user credentials and traffic to and from the affected device, including VoIP calls that could be replayed.

Published: 2024-05-01 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-20378 is rated Moderate Risk (56.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.80%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-20378

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-31 0.61% 0.80% +0.19%
2 2026-03-16 0.80% 0.61% -0.19%
3 2026-01-06 — 0.80% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-20378

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2024-20378

Affected software / configurations for CVE-2024-20378

Vendor Product Version Raw CPE
cisco ip_phone_6821_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_6821_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_6821_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_6821_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_6841_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_6841_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_6841_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_6851_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_6851_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_6851_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_6861_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_6861_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_6861_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_6871_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_6871_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_6871_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_7811_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_7811_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_7821_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_7821_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_7841_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_7841_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_7861_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_7861_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_8811_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_8811_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_8841_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_8841_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_8851_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_8851_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_8851nr_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_8851nr_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_8851nr_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_8851nr_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco ip_phone_8861_with_multiplatform_firmware < 12.0.4 cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:*:*:*:*:*:*:*:*
cisco ip_phone_8861_with_multiplatform_firmware 12.0.4 cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:12.0.4:-:*:*:*:*:*:*
cisco video_phone_8875_with_multiplatform_firmware < 2.3.1.0101 cpe:2.3:o:cisco:video_phone_8875_with_multiplatform_firmware:*:*:*:*:*:*:*:*

References for CVE-2024-20378

cvelogic Threat Intelligence