How severe is CVE-2015-4316?

CVE-2015-4316 has a CVSS 2.0 base score of 5.5, rated medium severity.

Is CVE-2015-4316 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4316?

CVE-2015-4316 affects Cisco Telepresence Video Communication Server Software. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-4316?

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

When was CVE-2015-4316 published?

CVE-2015-4316 was published on 2015-08-20 and last updated on 2026-06-17.

CVE-2015-4316

CVE-2015-4316 is a medium-severity vulnerability in Cisco Telepresence Video Communication Server Software with a CVSS 2.0 base score of 5.5. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.5)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Telepresence Video Communication Server Software
Published: 2015-08-20
Last modified: 2026-06-17

Description

The Mobile and Remote Access (MRA) endpoint-validation feature in Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.2 improperly validates the phone line used for registration, which allows remote authenticated users to conduct impersonation attacks via a crafted registration, aka Bug ID CSCuv40396.

Frequently asked questions

What is CVE-2015-4316?: The Mobile and Remote Access (MRA) endpoint-validation feature in Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.2 improperly validates the phone line used for registration, which allows remote authenticated users to conduct impersonation attacks via a crafted registration, aka Bug ID CSCuv40396.
How severe is CVE-2015-4316?: CVE-2015-4316 has a CVSS 2.0 base score of 5.5, rated medium severity.
Is CVE-2015-4316 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4316?: CVE-2015-4316 affects Cisco Telepresence Video Communication Server Software. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-4316?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4316 published?: CVE-2015-4316 was published on 2015-08-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cisco:telepresence_video_communication_server_software:x8.5.2:*:*:*:expressway:*:*:*

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