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CVE-2015-3326

15
FAUCET Score

CVE-2015-3326 describes an authentication bypass vulnerability in Trend Micro ScanMail for Microsoft Exchange (SMEX) versions 10.2 (before Hot Fix Build 3318) and 11.0 (before Hot Fix Build 4180). The flaw stems from the use of a predictable random number generator for web console session IDs, allowing remote attackers to brute-force and bypass authentication. With a CVSS score of 5.0 (medium severity), this vulnerability has a low attack complexity and could lead to information disclosure. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
10.2CPE matchmatch criteria
cpe:2.3:a:trend_micro:scanmail:10.2:*:*:*:*:microsoft_exchange:*:*
11.0CPE matchmatch criteria
cpe:2.3:a:trend_micro:scanmail:11.0:*:*:*:*:microsoft_exchange:*:*

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
2.30%
Probability of exploitation in next 30 days
EPSS Percentile
81.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0230 is in the 72nd percentile among its peer group of 23,690 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

blog.malerisch.net / 2016/05/trendmicro-smex-session-predictable-cve-2015-3326.html
esupport.trendmicro.com / solution/en-US/1109669.aspx
Vendor Advisory
securityfocus.com / bid/74661
securitytracker.com / id/1032323