CVE-2023-43616Public exploit

Receiver file overwrite via unchecked ZIP extraction

Published Sep 20, 2023 · Updated Aug 2, 2024

Path traversal in Croc before 9.6.16 allows attackers to overwrite receiver files through crafted ZIP entries sent in a transfer. UnzipDirectory derives each destination path from the archive entry name and opens it with truncation without first applying the normal existing-file prompt. The receiver must accept and extract the sender-controlled ZIP, and overwrites remain limited to files writable by the receiving process.

CVSS severity5.5
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Croc before 9.6.16 allows attackers to overwrite receiver files through crafted ZIP entries sent in a transfer. UnzipDirectory derives each destination path from the archive entry name and opens it with truncation without first applying the normal existing-file prompt. The receiver must accept and extract the sender-controlled ZIP, and overwrites remain limited to files writable by the receiving process.

The record

CVE
CVE-2023-43616
Published
Sep 20, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, CAPEC-126, T1565.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1565.001Stored Data Manipulation

Public exploit references

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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