WinZip up to 29.0 Archived Files inclusion of web functionality from an untrusted source

Summaryinfo

A vulnerability was found in WinZip up to 29.0 and classified as problematic. The impacted element is an unknown function of the component Archived Files Handler. Such manipulation leads to inclusion of web functionality from an untrusted source. This vulnerability is traded as CVE-2025-33028. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in WinZip up to 29.0. It has been rated as problematic. Affected by this issue is an unknown code of the component Archived Files Handler. The manipulation with an unknown input leads to a inclusion of web functionality from an untrusted source vulnerability. Using CWE to declare the problem leads to CWE-830. The product includes web functionality (such as a web widget) from another domain, which causes it to operate within the domain of the product, potentially granting total access and control of the product to the untrusted source. Impacted is integrity. CVE summarizes:

In WinZip through 29.0, there is a Mark-of-the-Web Bypass Vulnerability because of an incomplete fix for CVE-2024-8811. This vulnerability allows attackers to bypass the Mark-of-the-Web protection mechanism on affected installations of WinZip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of archived files. When extracting files from a crafted archive that bears the Mark-of-the-Web, WinZip does not propagate the Mark-of-the-Web to the extracted files. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current user.

The advisory is shared for download at kb.winzip.com. This vulnerability is handled as CVE-2025-33028 since 04/15/2025. 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 neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/26/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-13392). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• File Compression Software

Name

• WinZip

Version

• 29.0

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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