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CVE-2007-3873

18
FAUCET Score

CVE-2007-3873 describes a stack-based buffer overflow in the vstlib32.dll component of Trend Micro AntiSpyware 3.5 and PC-Cillin Internet Security 2007, specifically when the Venus Spy Trap (VST) feature is enabled. This vulnerability allows a local attacker to trigger a denial of service or execute arbitrary code by providing a file with an excessively long pathname. With a CVSS score of 6.9 (AV:L/AC:M/Au:N/C:C/I:C/A:C), it indicates a medium-severity local attack that could lead to full compromise. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this decade-old vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.5CPE matchmatch criteria
cpe:2.3:a:trend_micro:antispyware:3.5:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:a:trend_micro:pc-cillin_internet_security_2007:15.0:*:*:*:*:*:*:*
15.2CPE matchmatch criteria
cpe:2.3:a:trend_micro:pc-cillin_internet_security_2007:15.2:*:*:*:*:*:*:*
15.2_patchCPE matchmatch criteria
cpe:2.3:a:trend_micro:pc-cillin_internet_security_2007:15.2_patch:*:*:*:*:*:*:*
15.3CPE matchmatch criteria
cpe:2.3:a:trend_micro:pc-cillin_internet_security_2007:15.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.9MEDIUM

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 67th percentile among its peer group of 1,595 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, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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

esupport.trendmicro.com / support/consumer/search.do
labs.idefense.com / intelligence/vulnerabilities/display.php
secunia.com / advisories/26557
PatchVendor Advisory
securitytracker.com / id
PatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/36144
securityfocus.com / bid/25388
vupen.com / english/advisories/2007/2935