How severe is CVE-2021-39827?

CVE-2021-39827 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-39827 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-2021-39827?

CVE-2021-39827 affects Adobe Digital Editions. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-39827?

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

When was CVE-2021-39827 published?

CVE-2021-39827 was published on 2021-09-27 and last updated on 2026-06-17.

CVE-2021-39827

CVE-2021-39827 is a medium-severity vulnerability in Adobe Digital Editions with a CVSS 3.x base score of 6.5. 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-379.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.8
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-379
Affected product: Adobe Digital Editions
Published: 2021-09-27
Last modified: 2026-06-17

Description

Adobe Digital Editions 4.5.11.187646 (and earlier) are affected by an arbitrary file write vulnerability in the Digital Editions installer. An authenticated attacker could leverage this vulnerability to write an arbitrary file to the system. User interaction is required before product installation to abuse this vulnerability.

Frequently asked questions

What is CVE-2021-39827?: Adobe Digital Editions 4.5.11.187646 (and earlier) are affected by an arbitrary file write vulnerability in the Digital Editions installer. An authenticated attacker could leverage this vulnerability to write an arbitrary file to the system. User interaction is required before product installation to abuse this vulnerability.
How severe is CVE-2021-39827?: CVE-2021-39827 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-39827 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-2021-39827?: CVE-2021-39827 affects Adobe Digital Editions. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-39827?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-39827 published?: CVE-2021-39827 was published on 2021-09-27 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/Digital-Editions/apsb21-80.html

Affected products (1)

cpe:2.3:a:adobe:digital_editions:*:*:*:*:*:*:*:*

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