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CVE-2009-2702

24
FAUCET Score

CVE-2009-2702 describes a vulnerability in KDE KSSL within kdelibs versions 3.5.4, 4.2.4, and 4.3. This flaw allows man-in-the-middle attackers to spoof SSL servers by exploiting improper handling of a null character in the Subject Alternative Name field of an X.509 certificate. With a CVSS score of 7.5, this vulnerability is considered high severity, requiring no authentication and having a low attack complexity, potentially leading to compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.5.4CPE matchmatch criteria
cpe:2.3:a:kde:kdelibs:3.5.4:*:*:*:*:*:*:*
4.2.4CPE matchmatch criteria
cpe:2.3:a:kde:kdelibs:4.2.4:*:*:*:*:*:*:*
4.3CPE matchmatch criteria
cpe:2.3:a:kde:kdelibs:4.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 46th percentile among its peer group of 51,553 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

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

Vendor Advisories (1)

redhatCVE-2009-2702Low

kdelibs: kssl incorrect verification of SSL certificate with NUL in subjectAltName

Sep 1, 2009

References

bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/36468
Vendor Advisory
mandriva.com / security/advisories
mandriva.com / security/advisories
vupen.com / english/advisories/2009/2532
Vendor Advisory