How severe is CVE-2016-9207?

CVE-2016-9207 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2016-9207 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9207?

CVE-2016-9207 primarily affects Cisco Expressway. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-9207?

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

When was CVE-2016-9207 published?

CVE-2016-9207 was published on 2016-12-14 and last updated on 2026-06-17.

CVE-2016-9207

CVE-2016-9207 is a medium-severity vulnerability in Cisco Expressway with a CVSS 3.x base score of 6.5. 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 3.x base score 6.5)
CVSS v2: 6.4
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Expressway
Published: 2016-12-14
Last modified: 2026-06-17

Description

A vulnerability in the HTTP traffic server component of Cisco Expressway could allow an unauthenticated, remote attacker to initiate TCP connections to arbitrary hosts. This does not allow for full traffic proxy through the Expressway. Affected Products: This vulnerability affects Cisco Expressway Series Software and Cisco TelePresence Video Communication Server (VCS). More Information: CSCvc10834. Known Affected Releases: X8.7.2 X8.8.3. Known Fixed Releases: X8.9.

Frequently asked questions

What is CVE-2016-9207?: A vulnerability in the HTTP traffic server component of Cisco Expressway could allow an unauthenticated, remote attacker to initiate TCP connections to arbitrary hosts. This does not allow for full traffic proxy through the Expressway. Affected Products: This vulnerability affects Cisco Expressway Series Software and Cisco TelePresence Video Communication Server (VCS). More Information: CSCvc10834. Known Affected Releases: X8.7.2 X8.8.3. Known Fixed Releases: X8.9.
How severe is CVE-2016-9207?: CVE-2016-9207 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2016-9207 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9207?: CVE-2016-9207 primarily affects Cisco Expressway. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-9207?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-9207 published?: CVE-2016-9207 was published on 2016-12-14 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:cisco:expressway:x8.7.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:expressway:x8.8.3:*:*:*:*:*:*:*

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