How severe is CVE-2017-5933?

CVE-2017-5933 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-5933 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5933?

CVE-2017-5933 affects Citrix Netscaler Application Delivery Controller Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-5933?

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

When was CVE-2017-5933 published?

CVE-2017-5933 was published on 2017-02-08 and last updated on 2026-06-17.

CVE-2017-5933

CVE-2017-5933 is a medium-severity vulnerability in Citrix Netscaler Application Delivery Controller Firmware with a CVSS 3.x base score of 5.9. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Citrix Netscaler Application Delivery Controller Firmware
Published: 2017-02-08
Last modified: 2026-06-17

Description

Citrix NetScaler ADC and NetScaler Gateway 10.5 before Build 65.11, 11.0 before Build 69.12/69.123, and 11.1 before Build 51.21 randomly generates GCM nonces, which makes it marginally easier for remote attackers to obtain the GCM authentication key and spoof data by leveraging a reused nonce in a session and a "forbidden attack," a similar issue to CVE-2016-0270.

Frequently asked questions

What is CVE-2017-5933?: Citrix NetScaler ADC and NetScaler Gateway 10.5 before Build 65.11, 11.0 before Build 69.12/69.123, and 11.1 before Build 51.21 randomly generates GCM nonces, which makes it marginally easier for remote attackers to obtain the GCM authentication key and spoof data by leveraging a reused nonce in a session and a "forbidden attack," a similar issue to CVE-2016-0270.
How severe is CVE-2017-5933?: CVE-2017-5933 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-5933 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5933?: CVE-2017-5933 affects Citrix Netscaler Application Delivery Controller Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-5933?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-5933 published?: CVE-2017-5933 was published on 2017-02-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:citrix:netscaler_application_delivery_controller_firmware:*:*:*:*:*:*:*:*

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