CVE-2024-8811

Code execution via stripped Mark-of-the-Web

Published Nov 22, 2024 · Updated Dec 2, 2024

Mark-of-the-Web bypass in WinZip 28.0 (15640) 64-bit allows remote attackers to execute code through an archive opened by a user. When WinZip opens an archive bearing Mark-of-the-Web, it removes the marker from the archive and fails to apply it to extracted files. Exploitation requires user interaction to visit a malicious page or open a malicious file, after which code runs in the current user's context.

CVSS severity7.8
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Mark-of-the-Web bypass in WinZip 28.0 (15640) 64-bit allows remote attackers to execute code through an archive opened by a user. When WinZip opens an archive bearing Mark-of-the-Web, it removes the marker from the archive and fails to apply it to extracted files. Exploitation requires user interaction to visit a malicious page or open a malicious file, after which code runs in the current user's context.

The record

CVE
CVE-2024-8811
Published
Nov 22, 2024
Updated
Dec 2, 2024
Vendor
WinZip Computing
Product
WinZip
Classifications
CWE-693, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=28.0 (15640) 64-bit

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

WinZip Computing · WinZipversion=28.0 (15640) 64-bit

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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