How severe is CVE-2020-25266?

CVE-2020-25266 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-25266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25266?

CVE-2020-25266 affects Appimage Appimaged. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25266?

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

When was CVE-2020-25266 published?

CVE-2020-25266 was published on 2020-12-02 and last updated on 2026-06-17.

CVE-2020-25266

CVE-2020-25266 is a medium-severity vulnerability in Appimage Appimaged with a CVSS 3.x base score of 5.5. 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-494.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-494
Affected product: Appimage Appimaged
Published: 2020-12-02
Last modified: 2026-06-17

Description

AppImage appimaged before 1.0.3 does not properly check whether a downloaded file is a valid appimage. For example, it will accept a crafted mp3 file that contains an appimage, and install it.

Frequently asked questions

What is CVE-2020-25266?: AppImage appimaged before 1.0.3 does not properly check whether a downloaded file is a valid appimage. For example, it will accept a crafted mp3 file that contains an appimage, and install it.
How severe is CVE-2020-25266?: CVE-2020-25266 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-25266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25266?: CVE-2020-25266 affects Appimage Appimaged. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25266?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-25266 published?: CVE-2020-25266 was published on 2020-12-02 and last updated on 2026-06-17.

References

https://github.com/refi64/CVE-2020-25265-25266

Affected products (1)

cpe:2.3:a:appimage:appimaged:*:*:*:*:*:*:*:*

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