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CVE-2020-27890

HIGHCVSS 8.2/10EPSS 0.95%

Last modified

CVE-2020-27890 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. 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.. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.2/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

EPSS Probability
0.95%

56.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
TiZ-Stack3.0.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-27890?
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.
How severe is CVE-2020-27890?
CVE-2020-27890 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.
How do I fix CVE-2020-27890?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27890?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST