How severe is CVE-2013-3905?

CVE-2013-3905 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-3905 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3905?

CVE-2013-3905 primarily affects Microsoft Outlook. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3905?

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

When was CVE-2013-3905 published?

CVE-2013-3905 was published on 2013-11-13 and last updated on 2026-06-16.

CVE-2013-3905

CVE-2013-3905 is a medium-severity vulnerability in Microsoft Outlook with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Outlook
Published: 2013-11-13
Last modified: 2026-06-16

Description

Microsoft Outlook 2007 SP3, 2010 SP1 and SP2, 2013, and 2013 RT does not properly expand metadata contained in S/MIME certificates, which allows remote attackers to obtain sensitive network configuration and state information via a crafted certificate in an e-mail message, aka "S/MIME AIA Vulnerability."

Frequently asked questions

What is CVE-2013-3905?: Microsoft Outlook 2007 SP3, 2010 SP1 and SP2, 2013, and 2013 RT does not properly expand metadata contained in S/MIME certificates, which allows remote attackers to obtain sensitive network configuration and state information via a crafted certificate in an e-mail message, aka "S/MIME AIA Vulnerability."
How severe is CVE-2013-3905?: CVE-2013-3905 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-3905 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3905?: CVE-2013-3905 primarily affects Microsoft Outlook. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3905?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-3905 published?: CVE-2013-3905 was published on 2013-11-13 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:a:microsoft:outlook:2007:sp3:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook:2010:sp1:*:*:*:*:x64:*
cpe:2.3:a:microsoft:outlook:2010:sp1:*:*:*:x86:*:*
cpe:2.3:a:microsoft:outlook:2010:sp2:*:*:*:*:x64:*
cpe:2.3:a:microsoft:outlook:2010:sp2:*:*:*:x86:*:*
cpe:2.3:a:microsoft:outlook:2013:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook:2013:-:-:*:-:-:x64:*
cpe:2.3:a:microsoft:outlook:2013:-:-:*:-:-:x86:*

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