VulnerabilityModified
CVE-2021-3320
Type Confusion in 802154 ACK Frames Handling.
HIGH 7.5EPSS 0.85%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Type Confusion in 802154 ACK Frames Handling. Zephyr versions >= v2.4.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-27r3-rxch-2hm7
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.85% probability · 56th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476, CWE-843
- Affected
- zephyrproject/zephyr
- Source
- vulnerabilities@zephyrproject.org
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.