CVE-2025-33027Network 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 Bandisoft Bandizip 7.37 and earlier allows remote attackers to execute code after a malicious archive is opened. Bandizip fails to copy the archive's Zone.Identifier alternate data stream to extracted executable content, so Windows treats that content as locally sourced. A user must obtain and open the crafted archive and then launch its extracted payload; execution occurs with the current user's privileges.

CVSS severity7.8
High
EPSS probability0.29%
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 Bandisoft Bandizip 7.37 and earlier allows remote attackers to execute code after a malicious archive is opened. Bandizip fails to copy the archive's Zone.Identifier alternate data stream to extracted executable content, so Windows treats that content as locally sourced. A user must obtain and open the crafted archive and then launch its extracted payload; execution occurs with the current user's privileges.

The record

CVE
CVE-2025-33027
Published
Apr 15, 2025
Updated
Oct 24, 2025
Vendor
Bandisoft International Inc.
Product
Bandizip
Classifications
CWE-829, 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 <=7.37

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Bandisoft International Inc. · Bandizipversion=0 <=7.37

Published CVSS scores

6.1MITRECVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-829Inclusion of Functionality from Untrusted Control Sphere
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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