CVE-2021-21940
CVSS v3
10
CRITICAL
EPSS Score
1.3 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A heap-based buffer overflow vulnerability exists in the pushMuxer processRtspInfo functionality of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted network packet can lead to a heap buffer overflow. An attacker can send a malicious packet to trigger this vulnerability.
Technical details
- Published
- 2021-10-12
Frequently asked questions
What is CVE-2021-21940?
A heap-based buffer overflow vulnerability exists in the pushMuxer processRtspInfo functionality of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted network packet can lead to a heap buffer overflow. An attacker can send a malicious packet to trigger this vulnerability.
Is CVE-2021-21940 actively exploited?
Active exploitation of CVE-2021-21940 has not been confirmed. Its EPSS score was 1.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-21940?
CVE-2021-21940 has a CVSS v3 base score of 10 (CRITICAL severity).
Is CVE-2021-21940 affecting your environment?
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