CVE-2010-4566

CVE-2010-4566 is a critical-severity vulnerability in Citrix Access Gateway with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 28% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

The web authentication form in the NT4 authentication component in Citrix Access Gateway Enterprise Edition 9.2-49.8 and earlier, and the NTLM authentication component in Access Gateway Standard and Advanced Editions before Access Gateway 5.0, allows attackers to execute arbitrary commands via shell metacharacters in the password field.

Frequently asked questions

What is CVE-2010-4566?
The web authentication form in the NT4 authentication component in Citrix Access Gateway Enterprise Edition 9.2-49.8 and earlier, and the NTLM authentication component in Access Gateway Standard and Advanced Editions before Access Gateway 5.0, allows attackers to execute arbitrary commands via shell metacharacters in the password field.
How severe is CVE-2010-4566?
CVE-2010-4566 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2010-4566 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 28% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4566?
CVE-2010-4566 primarily affects Citrix Access Gateway. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-4566?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2010-4566 published?
CVE-2010-4566 was published on 2011-01-14 and last updated on 2026-06-16.

References

Affected products (18)

More vulnerabilities in Citrix Access Gateway

All CVEs affecting Citrix Access Gateway →