How severe is CVE-2020-25860?

CVE-2020-25860 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-25860 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25860?

CVE-2020-25860 affects Pengutronix Rauc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25860?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-25860 published?

CVE-2020-25860 was published on 2020-12-21 and last updated on 2026-06-17.

CVE-2020-25860

CVE-2020-25860 is a medium-severity vulnerability in Pengutronix Rauc with a CVSS 3.x base score of 6.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-367.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
CVSS v2: 7.1
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-367
Affected product: Pengutronix Rauc
Published: 2020-12-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-25860?: 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.
How severe is CVE-2020-25860?: CVE-2020-25860 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-25860 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25860?: CVE-2020-25860 affects Pengutronix Rauc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25860?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-25860 published?: CVE-2020-25860 was published on 2020-12-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pengutronix:rauc:*:*:*:*:*:*:*:*

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