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No exploitation reportedFix available

CVE-2021-26676

No exploitation reported by the sources we read.

  • Published2021-02-09

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-02-0916:15CVE publishedNVD

Versions per branch

NVD
Debian debian linux
BranchAffectedFixed in
9.0= 9.0no fix published
10.0= 10.0no fix published
Intel connman
BranchAffectedFixed in
1.39< 1.391.39
Opensuse leap
BranchAffectedFixed in
15.2= 15.2no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • connmanUbuntu:Pro:18.04:LTSall versions · fixed in 1.35-6ubuntu0.1~esm1
  • connmanUbuntu:Pro:16.04:LTSall versions · fixed in 1.21-1.2+deb8u1ubuntu0.1~esm1
  • connmanUbuntu:22.04:LTSall versions · fixed in 1.36-2.3ubuntu0.1
  • connmanUbuntu:20.04:LTSall versions · fixed in 1.36-2ubuntu0.1
  • connmanSUSE:Package Hub 15 SP2all versions · fixed in 1.39-bp152.4.3.1
  • connmanopenSUSE:Tumbleweedall versions · fixed in 1.40-2.2
  • connmanopenSUSE:Leap 15.2all versions · fixed in 1.39-lp152.3.3.1
  • connmanMageia:7all versions · fixed in 1.37-1.1.mga7

18 more package ranges on OSV.dev

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2021-02-09
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-6x7w-v26q-jfv3

Frequently asked questions

What is CVE-2021-26676?

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.

Is CVE-2021-26676 actively exploited?

Active exploitation of CVE-2021-26676 has not been confirmed. Its EPSS score was 1.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-26676?

CVE-2021-26676 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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