CVE-2021-35958Network attack vector

Arbitrary file overwrite via unchecked archive extraction

Published Jun 30, 2021 · Updated Aug 4, 2024

Path traversal in TensorFlow through 2.5.0 allows remote attackers to overwrite arbitrary files through a crafted archive. The tf.keras.utils.get_file extraction path passes archive members to extractall without verifying that resolved paths remain inside the cache directory. Exploitation requires an application to enable extraction for an attacker-controlled archive, a use that TensorFlow states is unsupported.

CVSS severity9.1
Critical
EPSS probability1.86%
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 TensorFlow through 2.5.0 allows remote attackers to overwrite arbitrary files through a crafted archive. The tf.keras.utils.get_file extraction path passes archive members to extractall without verifying that resolved paths remain inside the cache directory. Exploitation requires an application to enable extraction for an attacker-controlled archive, a use that TensorFlow states is unsupported.

The record

CVE
CVE-2021-35958
Published
Jun 30, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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-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

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Your stack

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