CVE-2020-15204

Name: CVE-2020-15204
Creator: NVD / NIST
Published: 2020-09-25T19:15:15.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2020-15204 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In eager mode, TensorFlow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1 does not set the session state. Hence, calling `tf.raw_ops.GetSessionHandle` or `tf.raw_ops.GetSessionHandleV2` results in a null pointer dereference In linked snippet, in eager mode, `ctx->session_state()` returns `nullptr`. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

In eager mode, TensorFlow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1 does not set the session state. Hence, calling `tf.raw_ops.GetSessionHandle` or `tf.raw_ops.GetSessionHandleV2` results in a null pointer dereference In linked snippet, in eager mode, `ctx->session_state()` returns `nullptr`. Since code immediately dereferences this, we get a segmentation fault. The issue is patched in commit 9a133d73ae4b4664d22bd1aa6d654fec13c52ee1, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

0.90%

55.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Google	Tensorflow	< 1.15.4
Google	Tensorflow	>= 2.0.0, < 2.0.3
Google	Tensorflow	>= 2.1.0, < 2.1.2
Google	Tensorflow	>= 2.2.0, < 2.2.1
Google	Tensorflow	>= 2.3.0, < 2.3.1
Opensuse	Leap	15.2

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00065.htmlMailing List, Third Party Advisory
https://github.com/tensorflow/tensorflow/commit/9a133d73ae4b4664d22bd1aa6d654fec13c52ee1Patch, Third Party Advisory
https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1Third Party Advisory
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-q8gv-q7wr-9jf8Exploit, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00065.htmlMailing List, Third Party Advisory
https://github.com/tensorflow/tensorflow/commit/9a133d73ae4b4664d22bd1aa6d654fec13c52ee1Patch, Third Party Advisory
https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1Third Party Advisory
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-q8gv-q7wr-9jf8Exploit, Third Party Advisory

Timeline

Published: Sep 25, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15204?

How severe is CVE-2020-15204?

CVE-2020-15204 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15204?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15204?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST