How severe is CVE-2022-27508?

CVE-2022-27508 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-27508 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-2022-27508?

CVE-2022-27508 primarily affects Citrix Application Delivery Controller. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-27508?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-27508 published?

CVE-2022-27508 was published on 2023-01-26 and last updated on 2026-06-17.

CVE-2022-27508

CVE-2022-27508 is a high-severity vulnerability in Citrix Application Delivery Controller with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Citrix Application Delivery Controller
Published: 2023-01-26
Last modified: 2026-06-17

Description

Unauthenticated denial of service

Frequently asked questions

What is CVE-2022-27508?: Unauthenticated denial of service
How severe is CVE-2022-27508?: CVE-2022-27508 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-27508 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-2022-27508?: CVE-2022-27508 primarily affects Citrix Application Delivery Controller. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-27508?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-27508 published?: CVE-2022-27508 was published on 2023-01-26 and last updated on 2026-06-17.

References

https://support.citrix.com/article/CTX457048/citrix-adc-and-citrix-gateway-security-bulletin-for-cve202227507-and-cve202227508

Affected products (2)

cpe:2.3:a:citrix:application_delivery_controller:12.1-64.16:*:*:*:*:*:*:*
cpe:2.3:a:citrix:gateway:12.1-64.16:*:*:*:*:*:*:*

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