CVE-2025-33028Network attack vector

Code execution via missing Mark-of-the-Web propagation

Published Apr 15, 2025 · Updated Oct 24, 2025

Mark-of-the-Web bypass in WinZip through 29.0 allows remote attackers to execute code after a user opens a crafted archive. During extraction, its archive handler fails to copy the source archive's Zone.Identifier data to extracted files, so Windows omits the Internet-origin warning. Exploitation requires user interaction and runs code as the current user; the record is disputed because the original report was deleted and the control's intended scope is contested.

CVSS severity6.1
Medium
EPSS probability0.51%
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 through 29.0 allows remote attackers to execute code after a user opens a crafted archive. During extraction, its archive handler fails to copy the source archive's Zone.Identifier data to extracted files, so Windows omits the Internet-origin warning. Exploitation requires user interaction and runs code as the current user; the record is disputed because the original report was deleted and the control's intended scope is contested.

The record

CVE
CVE-2025-33028
Published
Apr 15, 2025
Updated
Oct 24, 2025
Vendor
WinZip Computing
Product
WinZip
Classifications
CWE-830, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 24, 2025Record 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=0 <=29.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WinZip Computing · WinZipversion=0 <=29.0

Published CVSS scores

6.1MITRE CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-830Inclusion of Web Functionality from an Untrusted Source
T1204.002Malicious 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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