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CVE-2017-12865

33
FAUCET Score

CVE-2017-12865 is a critical stack-based buffer overflow vulnerability in the "dnsproxy.c" component of ConnMan versions 1.34 and earlier, affecting Debian and Intel ConnMan installations. With a CVSS score of 9.8, it allows unauthenticated remote attackers to trigger a denial of service or execute arbitrary code by sending a crafted DNS response query string. While there is no known active exploitation, publicly available exploit code, or inclusion in the KEV catalog, the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.34CPE matchmatch criteria
cpe:2.3:a:intel:connman:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.52%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0552 is in the 86th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia nvd_reference
View patch

References

01.org / security/intel-oss-10001/intel-oss-10001
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
git.kernel.org / pub/scm/network/connman/connman.git/commit
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/201812-02
Third Party Advisory
nri-secure.com / blog/new-iot-vulnerability-connmando
Third Party Advisory
debian.org / security/2017/dsa-3956
Third Party Advisory
securityfocus.com / bid/100498
Third Party AdvisoryVDB Entry