ArticaTech Artica Proxy up to 4.50.000000 fw.login.php PHPSESSID session fixiation

Summaryinfo

A vulnerability categorized as critical has been discovered in ArticaTech Artica Proxy up to 4.50.000000. The affected element is an unknown function of the file fw.login.php. Such manipulation of the argument PHPSESSID leads to session fixiation. This vulnerability is uniquely identified as CVE-2026-66745. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in ArticaTech Artica Proxy up to 4.50.000000 and classified as critical. Affected by this issue is an unknown functionality of the file fw.login.php. The manipulation of the argument PHPSESSID with an unknown input leads to a session fixiation vulnerability. Using CWE to declare the problem leads to CWE-384. Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Artica Proxy before 4.50.000000 Service Pack 7 (fixed in hotfix 20260724-02) contains a session fixation vulnerability that allows unauthenticated attackers to hijack administrative sessions by setting a known PHPSESSID on a victim's browser prior to authentication. Attackers can pre-set a controlled session identifier and wait for a victim to authenticate through fw.login.php, after which the attacker gains a fully authenticated administrative session on port 9000.

The advisory is shared for download at wiki.articatech.com. This vulnerability is handled as CVE-2026-66745 since 07/27/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

By approaching the search of inurl:fw.login.php it is possible to find vulnerable targets with Google Hacking.

Applying the patch 20260724-02 is able to eliminate this problem.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Firewall Software

Vendor

• ArticaTech

Name

• Artica Proxy

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17
• 4.18
• 4.19
• 4.20
• 4.21
• 4.22
• 4.23
• 4.24
• 4.25
• 4.26
• 4.27
• 4.28
• 4.29
• 4.30
• 4.31
• 4.32
• 4.33
• 4.34
• 4.35
• 4.36
• 4.37
• 4.38
• 4.39
• 4.40
• 4.41
• 4.42
• 4.43
• 4.44
• 4.45
• 4.46
• 4.47
• 4.48
• 4.49
• 4.50.000000

License

• commercial

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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