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CVE-2011-2717

33
FAUCET Score

CVE-2011-2717 describes a critical vulnerability in the DHCPv6 client (dhcp6c) affecting Linux and Red Hat Enterprise Linux. Remote DHCP servers can execute arbitrary commands by injecting shell metacharacters into a hostname received in a DHCP message. This vulnerability carries a CVSS score of 9.8 (CRITICAL) due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2011-07-25CPE matchmatch criteria
cpe:2.3:a:linux:dhcp6c:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*

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
3.93%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0393 is in the 82nd percentile among its peer group of 36,821 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

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: dhcpv6
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: dhcpv6

Vendor Advisories (1)

redhatCVE-2011-2717Moderate

dhcpv6: insufficient checking of DHCP options

Apr 5, 2011

References

access.redhat.com / security/cve/cve-2011-2717
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
vigilance.fr / vulnerability/dhcp6c-shell-command-injection-10869
Third Party Advisory
openwall.com / lists/oss-security/2011/07/26/9
Mailing ListThird Party Advisory