CVE-2021-33833
CVSS v3
9.8
CRITICAL
EPSS Score
2.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
ConnMan (aka Connection Manager) 1.30 through 1.39 has a stack-based buffer overflow in uncompress in dnsproxy.c via NAME, RDATA, or RDLENGTH (for A or AAAA).
Technical details
- Published
- 2021-06-09
Frequently asked questions
What is CVE-2021-33833?
ConnMan (aka Connection Manager) 1.30 through 1.39 has a stack-based buffer overflow in uncompress in dnsproxy.c via NAME, RDATA, or RDLENGTH (for A or AAAA).
Is CVE-2021-33833 actively exploited?
Active exploitation of CVE-2021-33833 has not been confirmed. Its EPSS score was 2.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-33833?
CVE-2021-33833 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-33833 affecting your environment?
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