CVE-2020-25860

Name: CVE-2020-25860
Creator: NVD / NIST
Published: 2020-12-21T18:15:15.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.6/10EPSS 1.42%

Last modified Jun 17, 2026

CVE-2020-25860 is a medium-severity vulnerability rated 6.6/10 on the CVSS scale. The install.c module in the Pengutronix RAUC update client prior to version 1.5 has a Time-of-Check Time-of-Use vulnerability, where signature verification on an update file takes place before the file is reopened for installation. An attacker who can modify the update file just before it is reopened can install arbitrary code on the device.. EPSS estimates a 1.42% chance of exploitation in the next 30 days.

Description

The install.c module in the Pengutronix RAUC update client prior to version 1.5 has a Time-of-Check Time-of-Use vulnerability, where signature verification on an update file takes place before the file is reopened for installation. An attacker who can modify the update file just before it is reopened can install arbitrary code on the device.

Metrics

CVSS 3.1

6.6/10

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

EPSS Probability

1.42%

69.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Pengutronix	Rauc	< 1.5

References

https://github.com/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vvExploit, Third Party Advisory
https://www.vdoo.com/blog/cve-2020-25860-significant-vulnerability-discovered-rauc-embedded-firmware-update-frameworkExploit, Third Party Advisory
https://github.com/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vvExploit, Third Party Advisory
https://www.vdoo.com/blog/cve-2020-25860-significant-vulnerability-discovered-rauc-embedded-firmware-update-frameworkExploit, Third Party Advisory

Timeline

Published: Dec 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25860?

How severe is CVE-2020-25860?

CVE-2020-25860 has a CVSS score of 6.6/10 (MEDIUM severity). The EPSS model estimates a 1.42% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25860?

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-2020-25860?

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

Scan your code now

Source: NVD / NIST