CVE intelligence and bounded remediation

CVE-2020-9502 — Some Dahua products with Build time before December 2019 have Session ID predictable vulnerabilities

Critical CVSS 9.8

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.

Severity
Critical
CVSS
9.8 (3.1)
Published
2020-05-13
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-330

Affected products

  • dahuasecurity / sd6al_firmware
  • dahuasecurity / sd5a_firmware
  • dahuasecurity / sd1a_firmware
  • dahuasecurity / ptz1a_firmware
  • dahuasecurity / sd50_firmware
  • dahuasecurity / sd52c_firmware

Showing 6 representative product identities from 20 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cryptography, certificate, signature, and channel validation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Inventory affected algorithms, key uses, trust stores, certificate validation settings, random sources, and plaintext channels across clients and services.
  • Determine which secrets, identities, signatures, or data protections depend on the affected primitive or validation path.
  • Check debug, compatibility, fallback, and hostname or audience override settings in build and runtime configuration.

Remediate safely

  • Use a maintained platform cryptographic API with approved algorithms, modes, parameters, randomness, and full peer identity validation.
  • Remove insecure fallback and validation bypasses; separate keys by purpose and load them from managed secret storage.
  • Plan rotation or reissuance for affected keys, certificates, tokens, hashes, or ciphertext and document compatibility sequencing.

Authoritative sources

Complete CVE record and remediation plan

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