How severe is CVE-2016-9257?

CVE-2016-9257 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-2016-9257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9257?

CVE-2016-9257 primarily affects F5 Big-ip Access Policy Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-9257?

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

When was CVE-2016-9257 published?

CVE-2016-9257 was published on 2017-05-09 and last updated on 2026-06-17.

CVE-2016-9257

CVE-2016-9257 is a medium-severity vulnerability in F5 Big-ip Access Policy Manager 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% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: F5 Big-ip Access Policy Manager
Published: 2017-05-09
Last modified: 2026-06-17

Description

In F5 BIG-IP APM 12.0.0 through 12.1.2, non-authenticated users may be able to inject JavaScript into a request that will then be rendered and executed in the context of the Administrative user when the Administrative user is viewing the Access System Logs, allowing the non-authenticated user to carry out a Cross Site Scripting (XSS) attack against the Administrative user.

Frequently asked questions

What is CVE-2016-9257?: In F5 BIG-IP APM 12.0.0 through 12.1.2, non-authenticated users may be able to inject JavaScript into a request that will then be rendered and executed in the context of the Administrative user when the Administrative user is viewing the Access System Logs, allowing the non-authenticated user to carry out a Cross Site Scripting (XSS) attack against the Administrative user.
How severe is CVE-2016-9257?: CVE-2016-9257 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-2016-9257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9257?: CVE-2016-9257 primarily affects F5 Big-ip Access Policy Manager. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-9257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-9257 published?: CVE-2016-9257 was published on 2017-05-09 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:f5:big-ip_access_policy_manager:12.0.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:12.1.2:*:*:*:*:*:*:*

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