CVE-2010-4566

critical

Published 2011-01-14 · Modified 2026-04-29

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

10.0

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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-16916 remote linux verified

Metasploit · 2011-03-03

Citrix Access Gateway - Command Execution (Metasploit)

Source code queued for fetch — refresh in a moment.

EDB-15806 remote linux verified

George D. Gal · 2010-12-22

Citrix Access Gateway - Command Injection

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_unix/webapp/citrix_access_gateway_exec rank 600

Citrix Access Gateway Command Execution

Source fetch failed: fetch_error — view the original via the link above.

Application impact

Vendor	Product	Versions
citrix	access_gateway	`{"endIncluding":"9.2-49.8"}`
citrix	access_gateway	`.8.0`
citrix	access_gateway	`8.0`
citrix	access_gateway	`8.1-69.4`
citrix	access_gateway	`9.0.71.3`
citrix	access_gateway	`9.1-104.5`
citrix	access_gateway	`4.5`
citrix	access_gateway	`4.5.5`
citrix	access_gateway	`4.5.6`
citrix	access_gateway	`4.5.7`
citrix	access_gateway	`4.6.1`
citrix	access_gateway	`4.6.2`
citrix	access_gateway	`4.6.3`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.