How severe is CVE-2023-28647?

CVE-2023-28647 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over physical access with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-28647 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28647?

CVE-2023-28647 affects Nextcloud. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28647?

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

When was CVE-2023-28647 published?

CVE-2023-28647 was published on 2023-03-30 and last updated on 2026-06-17.

CVE-2023-28647

CVE-2023-28647 is a medium-severity vulnerability in Nextcloud with a CVSS 3.x base score of 4.4. 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-281.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-281
Affected product: Nextcloud
Published: 2023-03-30
Last modified: 2026-06-17

Description

Nextcloud iOS is an ios application used to interface with the nextcloud home cloud ecosystem. In versions prior to 4.7.0 when an attacker has physical access to an unlocked device, they may enable the integration into the iOS Files app and bypass the Nextcloud pin/password protection and gain access to a users files. It is recommended that the Nextcloud iOS app is upgraded to 4.7.0. There are no known workarounds for this vulnerability.

Frequently asked questions

What is CVE-2023-28647?: Nextcloud iOS is an ios application used to interface with the nextcloud home cloud ecosystem. In versions prior to 4.7.0 when an attacker has physical access to an unlocked device, they may enable the integration into the iOS Files app and bypass the Nextcloud pin/password protection and gain access to a users files. It is recommended that the Nextcloud iOS app is upgraded to 4.7.0. There are no known workarounds for this vulnerability.
How severe is CVE-2023-28647?: CVE-2023-28647 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over physical access with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-28647 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28647?: CVE-2023-28647 affects Nextcloud. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28647?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-28647 published?: CVE-2023-28647 was published on 2023-03-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:iphone_os:*:*

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