CVE-2020-26267: Lack of validation in data format attributes in TensorFlow

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-12-10 · updated 2026-06-17
Weakness: CWE-125

Description

In affected versions of TensorFlow the tf.raw_ops.DataFormatVecPermute API does not validate the src_format and dst_format attributes. The code assumes that these two arguments define a permutation of NHWC. This can result in uninitialized memory accesses, read outside of bounds and even crashes. This is fixed in versions 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2, and 2.4.0.

Affected products

tensorflow: before 1.15.5; from 2.0.0 before 2.0.4; from 2.1.0 before 2.1.3; from 2.2.0 before 2.2.2; from 2.3.0 before 2.3.2 — fixed in 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2

How to fix

Upgrade to a fixed version: tensorflow 1.15.5, 2.0.4, 2.1.3, 2.2.2. Check the vendor advisory for mitigations.

References

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