How severe is CVE-2015-3326?

CVE-2015-3326 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-3326 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3326?

CVE-2015-3326 primarily affects Trend Micro Scanmail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3326?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-3326 published?

CVE-2015-3326 was published on 2015-05-14 and last updated on 2026-06-17.

CVE-2015-3326

CVE-2015-3326 is a medium-severity vulnerability in Trend Micro Scanmail with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Trend Micro Scanmail
Published: 2015-05-14
Last modified: 2026-06-17

Description

Trend Micro ScanMail for Microsoft Exchange (SMEX) 10.2 before Hot Fix Build 3318 and 11.0 before Hot Fix Build 4180 creates session IDs for the web console using a random number generator with predictable values, which makes it easier for remote attackers to bypass authentication via a brute force attack.

Frequently asked questions

What is CVE-2015-3326?: Trend Micro ScanMail for Microsoft Exchange (SMEX) 10.2 before Hot Fix Build 3318 and 11.0 before Hot Fix Build 4180 creates session IDs for the web console using a random number generator with predictable values, which makes it easier for remote attackers to bypass authentication via a brute force attack.
How severe is CVE-2015-3326?: CVE-2015-3326 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-3326 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3326?: CVE-2015-3326 primarily affects Trend Micro Scanmail. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3326?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-3326 published?: CVE-2015-3326 was published on 2015-05-14 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:trend_micro:scanmail:10.2:*:*:*:*:microsoft_exchange:*:*
cpe:2.3:a:trend_micro:scanmail:11.0:*:*:*:*:microsoft_exchange:*:*

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