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01 Record

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.

HighPUBLISHEDCNA: cisco
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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02 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.

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.88% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 58.7% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-05-01 16:43Z2 YR AGO
Last updated
2024-08-01 21:59Z2 YR AGO
Reserved
2023-11-08
Assigning CNA
cisco
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
Data version
5.1
Document digest
f6d4b4eba9da71e1ea452b7ee0435e793bdb743c3341357a3d30dc6d4bc74f2d

05 Affected products

VendorProductVersionsPlatforms
CiscoCisco IP Phones with Multiplatform Firmware11.3.1 MSR2-6, 11.3.1 MSR3-3, 11.3.2, 11.3.3, 11.3.1 MSR4-1, 11.3.4, 11.3.5, 11.3.3 MSR2, 11.3.3 MSR1, 11.3.6, 11-3-1MPPSR4UPG, 11.3.7, 11-3-1MSR2UPG, 11.3.6SR1, 11.3.7SR1, 11.3.7SR2, 11.0.0, 11.0.1, 11.0.1 MSR1-1, 11.0.2, 11.1.1, 11.1.1 MSR1-1, 11.1.1 MSR2-1, 11.1.2, 11.1.2 MSR1-1, 11.1.2 MSR3-1, 11.2.1, 11.2.2, 11.2.3, 11.2.3 MSR1-1, 11.2.4, 11.3.1, 11.3.1 MSR1-3, 4.5, 4.6 MSR1, 4.7.1, 4.8.1, 4.8.1 SR1, 5.0.1, 12.0.1, 12.0.2, 12.0.3, 12.0.3SR1, 12.0.4, 5.1.1, 5.1.2, 5.1(2)SR1—
CiscoCisco PhoneOS1.0.1, 2.1.1, 2.0.1, 2.3.1—
ciscoip_phone_6871_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_6821_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_6851_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_7821_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_6861_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_6825_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_6841_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_7811_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_7841_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_7861_with_multiplatform_firmware0 to 12.0.4—
ciscoip_phone_8800_series_with_multiplatform_firmware0 to 12.0.4—
ciscovideo_phone_8875_firmware0 to 12.0.4—

06 References