How severe is CVE-2015-4216?

CVE-2015-4216 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-4216 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4216?

CVE-2015-4216 primarily affects Cisco Content Security Management Virtual Appliance. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4216?

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

When was CVE-2015-4216 published?

CVE-2015-4216 was published on 2015-06-26 and last updated on 2026-06-17.

CVE-2015-4216

CVE-2015-4216 is a medium-severity vulnerability in Cisco Content Security Management Virtual Appliance 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. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Cisco Content Security Management Virtual Appliance
Published: 2015-06-26
Last modified: 2026-06-17

Description

The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), and Security Management Virtual Appliance (SMAv) devices before 2015-06-25 uses the same default SSH root authorized key across different customers' installations, which makes it easier for remote attackers to bypass authentication by leveraging knowledge of a private key from another installation, aka Bug IDs CSCuu95988, CSCuu95994, and CSCuu96630.

Frequently asked questions

What is CVE-2015-4216?: The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), and Security Management Virtual Appliance (SMAv) devices before 2015-06-25 uses the same default SSH root authorized key across different customers' installations, which makes it easier for remote attackers to bypass authentication by leveraging knowledge of a private key from another installation, aka Bug IDs CSCuu95988, CSCuu95994, and CSCuu96630.
How severe is CVE-2015-4216?: CVE-2015-4216 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-4216 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4216?: CVE-2015-4216 primarily affects Cisco Content Security Management Virtual Appliance. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-4216?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4216 published?: CVE-2015-4216 was published on 2015-06-26 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:a:cisco:content_security_management_virtual_appliance:8.4.0.0150:*:*:*:*:*:*:*
cpe:2.3:a:cisco:content_security_management_virtual_appliance:9.0.0.087:*:*:*:*:*:*:*
cpe:2.3:a:cisco:email_security_virtual_appliance:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:email_security_virtual_appliance:8.5.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:email_security_virtual_appliance:8.5.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:email_security_virtual_appliance:9.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_virtual_appliance:7.7.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_virtual_appliance:8.0.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_virtual_appliance:8.5.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_virtual_appliance:8.5.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_virtual_appliance:8.6.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:web_security_virtual_appliance:8.7.0:*:*:*:*:*:*:*

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