What’s Vulnerable › Vulnerabilities

CVE-2020-27890

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-27 · updated 2026-06-17

Description

The Zigbee protocol implementation on Texas Instruments CC2538 devices with Z-Stack 3.0.1 does not properly process a ZCL Write Attributes No Response message. It crashes in zclParseInWriteCmd() and does not update the specific attribute's value.

Affected products

• Ti Z-Stack: 3.0.1

References

• https://github.com/zigbeeprotocol/Z-Fuzzer/tree/master/vulnerabilities
• https://www.ti.com/tool/Z-STACK
• https://github.com/zigbeeprotocol/Z-Fuzzer/tree/master/vulnerabilities
• https://www.ti.com/tool/Z-STACK

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