Out-of-bounds read in TensorFlow - CVE-2021-37679
Published: August 12, 2021 / Updated: May 3, 2026
Vulnerability identifier: #VU129224
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-37679
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: TensorFlow
Affected software:
TensorFlow
TensorFlow
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in the conversion from a Variant tensor to a RaggedTensor when processing nested tf.map_fn calls with RaggedTensor input and no function signature. A remote attacker can supply crafted RaggedTensor input to disclose sensitive information.
The issue can occur because the implementation does not check that all inner shapes match.
How to mitigate CVE-2021-37679
Install security update from vendor's website.