What’s Vulnerable › Vulnerabilities

CVE-2021-33833

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-06-09 · updated 2026-06-17
• Weakness: CWE-787

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).

Affected products

• Debian Linux: 9.0
• Intel Connection Manager: from 1.30 through 1.39

References

• http://www.openwall.com/lists/oss-security/2021/06/09/1
• http://www.openwall.com/lists/oss-security/2022/01/25/1
• https://lists.debian.org/debian-lts-announce/2022/02/msg00009.html
• https://lore.kernel.org/connman/
• https://security.gentoo.org/glsa/202107-29
• http://www.openwall.com/lists/oss-security/2021/06/09/1
• http://www.openwall.com/lists/oss-security/2022/01/25/1
• https://lists.debian.org/debian-lts-announce/2022/02/msg00009.html
• https://lore.kernel.org/connman/
• https://security.gentoo.org/glsa/202107-29

Get alerted when CVE-2021-33833 or the next vulnerability affects your stack