CVE-2020-15203

Name: CVE-2020-15203
Creator: NVD / NIST
Published: 2020-09-25T19:15:15.62+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.95%

Last modified Jun 17, 2026

CVE-2020-15203 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, by controlling the `fill` argument of tf.strings.as_string, a malicious attacker is able to trigger a format string vulnerability due to the way the internal format use in a `printf` call is constructed. This may result in segmentation fault. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, by controlling the `fill` argument of tf.strings.as_string, a malicious attacker is able to trigger a format string vulnerability due to the way the internal format use in a `printf` call is constructed. This may result in segmentation fault. The issue is patched in commit 33be22c65d86256e6826666662e40dbdfe70ee83, 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

7.5/10

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

EPSS Probability

0.95%

56.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

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/33be22c65d86256e6826666662e40dbdfe70ee83Patch, Third Party Advisory
https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1Third Party Advisory
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-xmq7-7fxm-rr79Exploit, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00065.htmlMailing List, Third Party Advisory
https://github.com/tensorflow/tensorflow/commit/33be22c65d86256e6826666662e40dbdfe70ee83Patch, Third Party Advisory
https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1Third Party Advisory
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-xmq7-7fxm-rr79Exploit, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2020-15203?

How severe is CVE-2020-15203?

CVE-2020-15203 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15203?

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-2020-15203?

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

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Source: NVD / NIST