This security advisory describes one critical risk vulnerability.
CWE-862 - Missing Authorization
Exploit availability: Yes [Search exploit]Description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to improper checking for authorization by plone.app.user. A remote attacker can modify the properties of arbitrary accounts.
Successful exploitation of the vulnerability may result in attacker's access to the vulnerable system.
Note: the vulnerability was being actively exploited.
Update the latest version from vendor's website:
Plone: 4.0, 4.1CPE
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.