CVE-2021-1131

What it is

A vulnerability in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause an affected IP camera to reload. The vulnerability is due to missing checks when Cisco Discovery Protocol messages are processed. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected IP camera. A successful exploit could allow the attacker to cause the affected IP camera to reload unexpectedly, resulting in a denial of service (DoS) condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

At a glance

Exploitability

Can be exploited from the same network segment without logging in. High risk of service disruption.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-01-13 22:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:31 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.5% in the next 30 days (EPSS).
• Severity: 6.5 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-01-13 22:15 UTC

Last modified

2026-06-17 03:31 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Cisco Video Surveillance 8000p Ip Camera Firmware < 1.0.9-8
• Cisco Video Surveillance 8020 Ip Camera Firmware < 1.0.9-8
• Cisco Video Surveillance 8030 Ip Camera Firmware < 1.0.9-8
• Cisco Video Surveillance 8070 Ip Camera Firmware < 1.0.9-8
• Cisco Video Surveillance 8400 Ip Camera Firmware < 1.0.9-8
• Cisco Video Surveillance 8620 Ip Camera Firmware < 1.0.9-8
• Cisco Video Surveillance 8630 Ip Camera Firmware < 1.0.9-8
• Cisco Video Surveillance 8930 Speed Dome Ip Camera Firmware < 1.0.9-8

Attack profile CVSS 3.1 · 6.5

Attack vector

Adjacent network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-1131.md and follow it. Check whether this project is affected by CVE-2021-1131. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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