CVE-2019-5455
CVE-2019-5455 is a medium-severity vulnerability in Nextcloud with a CVSS 3.x base score of 6.8. 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-287.
Key facts
- Severity: Medium (CVSS 3.x base score 6.8)
- CVSS v2: 4.6
- EPSS exploit prediction: 0% (37th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Nextcloud
- Published:
- Last modified:
Description
Bypassing lock protection exists in Nextcloud Android app 3.6.0 when creating a multi-account and aborting the process.
Frequently asked questions
- What is CVE-2019-5455?
- Bypassing lock protection exists in Nextcloud Android app 3.6.0 when creating a multi-account and aborting the process.
- How severe is CVE-2019-5455?
- CVE-2019-5455 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2019-5455 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-5455?
- CVE-2019-5455 affects Nextcloud. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-5455?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-5455 published?
- CVE-2019-5455 was published on 2019-07-30 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:nextcloud:nextcloud:3.6.0:*:*:*:*:android:*:*
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- CVE-2021-22912 — Medium (CVSS 6.5): Nextcloud iOS before 3.4.2 suffers from an information disclosure vulnerability when searches for sharees utilize the…
- CVE-2021-22905 — Medium (CVSS 6.5): Nextcloud Android App (com.nextcloud.client) before v3.16.0 is vulnerable to information disclosure due to searches for…
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Other CWE-287 (Improper Authentication) vulnerabilities
- CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
- CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
- CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
- CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
- CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…
Browse all CWE-287 (Improper Authentication) vulnerabilities →