CVE-2020-9502

What it is

Some Dahua products with Build time before December 2019 have Session ID predictable vulnerabilities. During normal user access, an attacker can use the predicted Session ID to construct a data packet to attack the device.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

1.5% chance of exploitation in the next 30 days (EPSS).

Fix

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

Timeline

1. 2020-05-13 16:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:28 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.5% in the next 30 days (EPSS).
• Severity: 9.8 CRITICAL (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-05-13 16:15 UTC

Last modified

2026-06-17 03:28 UTC

Exploit probability

1.5% · EPSS, next 30 days

Weakness

CWE-330

Record status

Modified

Affected

• Dahuasecurity sd6al Firmware < 2019-12
• Dahuasecurity sd5a Firmware < 2019-12
• Dahuasecurity sd1a Firmware < 2019-12
• Dahuasecurity ptz1a Firmware < 2019-12
• Dahuasecurity sd50 Firmware < 2019-12
• Dahuasecurity sd52c Firmware < 2019-12
• Dahuasecurity ipc-hx5842h Firmware < 2019-12
• Dahuasecurity ipc-hx7842h Firmware < 2019-12

Attack profile CVSS 3.1 · 9.8

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

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