How severe is CVE-2020-3543?

CVE-2020-3543 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-3543 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3543?

CVE-2020-3543 primarily affects Cisco 8000p Ip Camera Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3543?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-3543 published?

CVE-2020-3543 was published on 2020-10-08 and last updated on 2026-06-17.

CVE-2020-3543

CVE-2020-3543 is a medium-severity vulnerability in Cisco 8000p Ip Camera Firmware with a CVSS 3.x base score of 6.5. 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-401.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.1
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Cisco 8000p Ip Camera Firmware
Published: 2020-10-08
Last modified: 2026-06-17

Description

A vulnerability in the Cisco Discovery Protocol of Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause a memory leak, which could lead to a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect processing of certain Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by sending certain Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause the affected device to continuously consume memory, which could cause the device to crash and reload, resulting in a 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).

Frequently asked questions

What is CVE-2020-3543?: A vulnerability in the Cisco Discovery Protocol of Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause a memory leak, which could lead to a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect processing of certain Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by sending certain Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to cause the affected device to continuously consume memory, which could cause the device to crash and reload, resulting in a 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).
How severe is CVE-2020-3543?: CVE-2020-3543 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-3543 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3543?: CVE-2020-3543 primarily affects Cisco 8000p Ip Camera Firmware. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3543?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-3543 published?: CVE-2020-3543 was published on 2020-10-08 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cdp-memleak-heyebx9

Affected products (8)

cpe:2.3:o:cisco:8000p_ip_camera_firmware:1.0.9-4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:8020_ip_camera_firmware:1.0.9-4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:8030_ip_camera_firmware:1.0.9-4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:8070_ip_camera_firmware:1.0.9-4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:8400_ip_camera_firmware:1.0.9-4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:8620_ip_camera_firmware:1.0.9-4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:8630_ip_camera_firmware:1.0.9-4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:8930_speed_dome_ip_camera_firmware:1.0.9-4:*:*:*:*:*:*:*

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CVE-2020-3544 — High (CVSS 8.8): A vulnerability in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras…
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