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CVE-2014-9221

16
FAUCET Score

CVE-2014-9221 describes a denial-of-service vulnerability in strongSwan versions 4.5.x through 5.2.x before 5.2.1, affecting various Linux distributions including Canonical, Debian, Fedora, and OpenSUSE. A remote attacker can trigger an invalid pointer dereference by sending a specially crafted IKEv2 Key Exchange message using Diffie-Hellman group 1025. The vulnerability has a CVSS score of 5.0, indicating a medium severity with low attack complexity and no authentication required, leading to a denial of service. There is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.5.0CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:4.5.0:*:*:*:*:*:*:*
4.5.1CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:4.5.1:*:*:*:*:*:*:*
4.5.2CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:4.5.2:*:*:*:*:*:*:*
4.5.3CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:4.5.3:*:*:*:*:*:*:*
4.6.0CPE matchmatch criteria
cpe:2.3:a:strongswan:strongswan:4.6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.82%
Probability of exploitation in next 30 days
EPSS Percentile
89.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0382 is in the 85th percentile among its peer group of 23,705 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Advisories (1)

redhatCVE-2014-9221Moderate

strongswan: denial-of-service vulnerability in libtls when processing crafted Key Exchange payload

Jan 5, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-March/153825.html
Third Party Advisory
lists.opensuse.org / opensuse-updates/2015-01/msg00054.html
Third Party Advisory
secunia.com / advisories/62071
Permissions RequiredThird Party Advisory
secunia.com / advisories/62083
secunia.com / advisories/62095
Permissions RequiredThird Party Advisory
secunia.com / advisories/62663
Permissions RequiredThird Party Advisory
strongswan.org / blog/2015/01/05/strongswan-5.2.2-released.html
Vendor Advisory
strongswan.org / blog/2015/01/05/strongswan-denial-of-service-vulnerability-%28cve-2014-9221%29.html
debian.org / security/2015/dsa-3118
Third Party Advisory
securityfocus.com / bid/71894
ubuntu.com / usn/USN-2450-1
Third Party Advisory