How severe is CVE-2020-10111?

CVE-2020-10111 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 high, and availability none.

Is CVE-2020-10111 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-10111?

CVE-2020-10111 primarily affects Citrix Gateway Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-10111?

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-2020-10111 published?

CVE-2020-10111 was published on 2020-03-06 and last updated on 2026-06-17.

CVE-2020-10111

CVE-2020-10111 is a high-severity vulnerability in Citrix Gateway Firmware 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-444.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-444
Affected product: Citrix Gateway Firmware
Published: 2020-03-06
Last modified: 2026-06-17

Description

Citrix Gateway 11.1, 12.0, and 12.1 has an Inconsistent Interpretation of HTTP Requests. NOTE: Citrix disputes the reported behavior as not a security issue. Citrix ADC only caches HTTP/1.1 traffic for performance optimization

Frequently asked questions

What is CVE-2020-10111?: Citrix Gateway 11.1, 12.0, and 12.1 has an Inconsistent Interpretation of HTTP Requests. NOTE: Citrix disputes the reported behavior as not a security issue. Citrix ADC only caches HTTP/1.1 traffic for performance optimization
How severe is CVE-2020-10111?: CVE-2020-10111 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 high, and availability none.
Is CVE-2020-10111 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-10111?: CVE-2020-10111 primarily affects Citrix Gateway Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-10111?: 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-2020-10111 published?: CVE-2020-10111 was published on 2020-03-06 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:citrix:gateway_firmware:11.1:*:*:*:*:*:*:*
cpe:2.3:o:citrix:gateway_firmware:12.0:*:*:*:*:*:*:*
cpe:2.3:o:citrix:gateway_firmware:12.1:*:*:*:*:*:*:*

More vulnerabilities in Citrix Gateway Firmware

CVE-2022-27518 — Critical (CVSS 9.8): Unauthenticated remote arbitrary code execution
CVE-2019-19781 — Critical (CVSS 9.8): An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0.…
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CVE-2020-8197 — High (CVSS 8.8): Privilege escalation vulnerability on Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21,…
CVE-2020-8190 — High (CVSS 7.5): Incorrect file permissions in Citrix ADC and Citrix Gateway before versions 13.0-58.30, 12.1-57.18, 12.0-63.21,…
CVE-2020-8195 — Medium (CVSS 6.5): Improper input validation in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21,…

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