Division by zero in TensorFlow - CVE-2021-29550
Published: May 13, 2021 / Updated: May 4, 2026
Vulnerability identifier: #VU129342
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-29550
CWE-ID: CWE-369
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
TensorFlow
TensorFlow
Software vendor:
TensorFlow
TensorFlow
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to division by zero in tf.raw_ops.FractionalAvgPool when processing user-supplied input shapes and pooling ratios. A remote attacker can supply crafted value and pooling_ratio arguments to cause a denial of service.
The issue occurs because a computed output size can become 0 in released builds, leading to a crash in a later modulo operation.
Remediation
Install security update from vendor's website.