CVE-2025-32799Public exploitNetwork attack vector

Arbitrary file overwrite via unsanitized tar extraction

Published Jun 16, 2025 · Updated Jun 17, 2025

Path traversal in Conda conda-build before 25.4.0 allows attackers to overwrite files by processing a crafted tar recipe. The open_recipe and extract_temporary_directory paths call tar.extractall without validating that member paths remain inside their temporary directories. Exploitation requires a user to process the archive and can replace predictable shell profiles, executables, or cron jobs to gain code execution.

CVSS severity9.8
Critical
EPSS probability1.33%
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 Conda conda-build before 25.4.0 allows attackers to overwrite files by processing a crafted tar recipe. The open_recipe and extract_temporary_directory paths call tar.extractall without validating that member paths remain inside their temporary directories. Exploitation requires a user to process the archive and can replace predictable shell profiles, executables, or cron jobs to gain code execution.

The record

CVE
CVE-2025-32799
Published
Jun 16, 2025
Updated
Jun 17, 2025
Vendor
Conda
Product
conda-build
Classifications
CWE-22, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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=< 25.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Conda · conda-buildversion=< 25.4.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.6GitHub CNACVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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 exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1204.002User Execution: Malicious File

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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