How severe is CVE-2016-1377?

CVE-2016-1377 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-1377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1377?

CVE-2016-1377 primarily affects Cisco Unity Connection. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1377?

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

When was CVE-2016-1377 published?

CVE-2016-1377 was published on 2016-04-12 and last updated on 2026-06-17.

CVE-2016-1377

CVE-2016-1377 is a medium-severity vulnerability in Cisco Unity Connection with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Cisco Unity Connection
Published: 2016-04-12
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in Cisco Unity Connection through 11.0 allows remote attackers to inject arbitrary web script or HTML via unspecified parameters, aka Bug ID CSCus21776.

Frequently asked questions

What is CVE-2016-1377?: Cross-site scripting (XSS) vulnerability in Cisco Unity Connection through 11.0 allows remote attackers to inject arbitrary web script or HTML via unspecified parameters, aka Bug ID CSCus21776.
How severe is CVE-2016-1377?: CVE-2016-1377 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-1377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1377?: CVE-2016-1377 primarily affects Cisco Unity Connection. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-1377 published?: CVE-2016-1377 was published on 2016-04-12 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:cisco:unity_connection:10.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:10.0.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:10.5\(2\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:10.5\(2.3009\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:11.0\(0.98000.225\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unity_connection:11.0.0:*:*:*:*:*:*:*

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