CVE-2011-2165

WatchGuard XCS 9.0-9.1 - Command Injection

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-2165.

AI-analyzed exploit summary The exploit demonstrates multiple vulnerabilities in Watchguard XCS <=10.0, including unauthenticated SQL injection via the 'sid' cookie, command injection via the 'id' parameter in 'mailqueue.spl', and privilege escalation via the 'FixCorruptMail' script. It includes functional PoC code for each vulnerability, including a Python script to generate password hashes for backdoor user creation.

Description

The STARTTLS implementation in WatchGuard XCS 9.0 and 9.1 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.

Exploits (1)

exploitdb WORKING POC
webappsphp
https://www.exploit-db.com/exploits/37440

The exploit demonstrates multiple vulnerabilities in Watchguard XCS <=10.0, including unauthenticated SQL injection via the 'sid' cookie, command injection via the 'id' parameter in 'mailqueue.spl', and privilege escalation via the 'FixCorruptMail' script. It includes functional PoC code for each vulnerability, including a Python script to generate password hashes for backdoor user creation.

Classification
Working Poc 95%
Attack Type
Sqli | Rce | Lpe
Complexity
Moderate
Reliability
Reliable
Target: Watchguard XCS <=10.0
No auth needed
Prerequisites: Network access to the target · Ability to send HTTP requests to the target
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (5)

Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/67729
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/44753
US Government Resource x_refsource_confirm
http://www.kb.cert.org/vuls/id/MAPG-8D9M75
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/555316

Scores

EPSS 0.0516
EPSS Percentile 91.3%

Details

CWE
CWE-264
Status published
Products (2)
watchguard/xcs 9.0
watchguard/xcs 9.1
Published May 23, 2011
Tracked Since Feb 18, 2026