What’s Vulnerable › Vulnerabilities

CVE-2021-26676

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-09 · updated 2026-06-17

Description

gdhcp in ConnMan before 1.39 could be used by network-adjacent attackers to leak sensitive stack information, allowing further exploitation of bugs in gdhcp.

Affected products

• Debian Linux: 9.0, 10.0
• Intel Connman: before 1.39 — fixed in 1.39
• openSUSE Leap: 15.2

How to fix

Upgrade to a fixed version: Intel Connman 1.39. Check the vendor advisory for mitigations.

References

• https://bugzilla.suse.com/show_bug.cgi?id=1181751
• https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=58d397ba74873384aee449690a9070bacd5676fa
• https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=a74524b3e3fad81b0fd1084ffdf9f2ea469cd9b1
• https://git.kernel.org/pub/scm/network/connman/connman.git/tree/ChangeLog
• https://kunnamon.io/tbone/
• https://lists.debian.org/debian-lts-announce/2021/02/msg00013.html
• https://security.gentoo.org/glsa/202107-29
• https://www.debian.org/security/2021/dsa-4847
• https://www.openwall.com/lists/oss-security/2021/02/08/2
• https://bugzilla.suse.com/show_bug.cgi?id=1181751
• https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=58d397ba74873384aee449690a9070bacd5676fa
• https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=a74524b3e3fad81b0fd1084ffdf9f2ea469cd9b1

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