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CVE-2005-4839

15
FAUCET Score

CVE-2005-4839 describes an information leakage vulnerability in PureTLS versions prior to 0.9b5, affecting Claymore Systems Inc. products. The flaw stems from the software failing to clear optional Extensions and Algorithm.Parameters values before parsing, potentially exposing data from previously processed certificates. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:P/I:N/A:N), this vulnerability is remotely exploitable with low complexity, leading to a partial information disclosure. There is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9b4CPE matchmatch criteria
cpe:2.3:a:claymore_systems_inc:puretls:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

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

Exploit Intelligence

EPSS Score
0.55%
Probability of exploitation in next 30 days
EPSS Percentile
42.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0055 is in the 27th percentile among its peer group of 23,723 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

Remediation records are not available for this CVE.

References

www1.ietf.org / mail-archive/web/tls/current/msg00229.html
rtfm.com / puretls