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CVE-2024-8811VulnerabilityPublished Updated

CVE-2024-8811: WinZip · Protection Mechanism Failure

Affects WinZipSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.0 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 37% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Nov 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

AI-suggested

To mitigate CVE-2024-8811, organizations should first verify if they are using the affected version of WinZip (28.0 (15640) 64-bit) and upgrade to a patched version once available. In the absence of an official patch, users should avoid opening archive files from untrusted or unknown sources. Implement strict email filtering and attachment scanning to reduce the risk of malicious archives reaching end users. Employ endpoint protection solutions capable of detecting and blocking suspicious archive extraction behaviors. Educate users about the risks of opening unsolicited archives and the importance of verifying file origins. Additionally, consider enforcing application whitelisting and restricting execution of files in user download or temporary directories where extracted files typically reside. Monitoring for unusual process behaviors related to WinZip or archive extraction can also help detect exploitation attempts early. Finally, coordinate with WinZip Computing for updates and advisories to ensure timely application of security patches.

Description

WinZip Mark-of-the-Web Bypass Vulnerability. This vulnerability allows remote 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 archive files. When opening an archive that bears the Mark-of-the-Web, WinZip removes the Mark-of-the-Web from the archive file. Following extraction, the extracted files also lack the Mark-of-the-Web. An attacker can leverage this vulnerability to execute arbitrary code in the context of the current user. Was ZDI-CAN-23983.

References

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