How severe is CVE-2017-16878?

CVE-2017-16878 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-2017-16878 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16878?

CVE-2017-16878 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16878?

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

When was CVE-2017-16878 published?

CVE-2017-16878 was published on 2018-01-10 and last updated on 2026-06-17.

CVE-2017-16878

CVE-2017-16878 is a medium-severity vulnerability in Paloaltonetworks Pan-os 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% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Paloaltonetworks Pan-os
Published: 2018-01-10
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in the Captive Portal function in Palo Alto Networks PAN-OS before 8.0.7 allows remote attackers to inject arbitrary web script or HTML by leveraging an unspecified configuration.

Frequently asked questions

What is CVE-2017-16878?: Cross-site scripting (XSS) vulnerability in the Captive Portal function in Palo Alto Networks PAN-OS before 8.0.7 allows remote attackers to inject arbitrary web script or HTML by leveraging an unspecified configuration.
How severe is CVE-2017-16878?: CVE-2017-16878 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-2017-16878 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16878?: CVE-2017-16878 affects Paloaltonetworks Pan-os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16878?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-16878 published?: CVE-2017-16878 was published on 2018-01-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*

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