CVE-2025-3445Network attack vector

Arbitrary file overwrite via ZIP symlink traversal

Published Apr 13, 2025 · Updated Apr 14, 2025

Path traversal in Matt Holt Archiver v3 3.5.1 and earlier allows attackers to overwrite arbitrary files through crafted ZIP archives. Unarchive follows path-traversal symlinks from ZIP entries without verifying that each resolved target remains under the output directory. Exploitation requires a consuming application to extract an attacker-controlled archive; writes inherit that application's privileges and can enable code execution.

CVSS severity8.1
High
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in Matt Holt Archiver v3 3.5.1 and earlier allows attackers to overwrite arbitrary files through crafted ZIP archives. Unarchive follows path-traversal symlinks from ZIP entries without verifying that each resolved target remains under the output directory. Exploitation requires a consuming application to extract an attacker-controlled archive; writes inherit that application's privileges and can enable code execution.

The record

CVE
CVE-2025-3445
Published
Apr 13, 2025
Updated
Apr 14, 2025
Vendor
Matt Holt
Product
Archiver v3
Classifications
CWE-22
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=v3.0.0 <=v3.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Matt Holt · Archiver v3version=v3.0.0 <=v3.5.1

Published CVSS scores

8.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L

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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo