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CVE-2007-2640

20
FAUCET Score

CVE-2007-2640 describes a vulnerability in LibTMCG versions prior to 1.1.1, specifically affecting the heiko_stamer libtmcg product. The flaw stems from a missing range check that allows for "trivial group generators," potentially enabling attackers to extract sensitive information related to private cards. This vulnerability carries a high CVSS score of 7.8, indicating a critical severity due to its network-based attack vector, low attack complexity, and complete confidentiality impact without requiring authentication. There is no evidence of active exploitation, readily available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:heiko_stamer:libtmcg:1.0:*:*:*:*:*:*:*
1.0.1CPE matchmatch criteria
cpe:2.3:a:heiko_stamer:libtmcg:1.0.1:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:heiko_stamer:libtmcg:1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.36%
Probability of exploitation in next 30 days
EPSS Percentile
68.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0136 is in the 49th percentile among its peer group of 51,485 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, 0.1 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

Remediation records are not available for this CVE.

References

osvdb.org / 34772
savannah.nongnu.org / forum/forum.php
Patch
secunia.com / advisories/25317
exchange.xforce.ibmcloud.com / vulnerabilities/34235
securityfocus.com / bid/23930
Patch
vupen.com / english/advisories/2007/1760