CVE-2020-1677
CVE-2020-1677 is a high-severity vulnerability in Juniper Mist Cloud Ui with a CVSS 3.x base score of 7.2. 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-345.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- CVSS v2: 4.3
- EPSS exploit prediction: 0% (34th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-345
- Affected product: Juniper Mist Cloud Ui
- Published:
- Last modified:
Description
When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML responses, allowing a remote attacker to modify a valid SAML response without invalidating its cryptographic signature to bypass SAML authentication security controls. This issue affects all Juniper Networks Mist Cloud UI versions prior to September 2 2020.
Frequently asked questions
- What is CVE-2020-1677?
- When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML responses, allowing a remote attacker to modify a valid SAML response without invalidating its cryptographic signature to bypass SAML authentication security controls. This issue affects all Juniper Networks Mist Cloud UI versions prior to September 2 2020.
- How severe is CVE-2020-1677?
- CVE-2020-1677 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2020-1677 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-1677?
- CVE-2020-1677 affects Juniper Mist Cloud Ui. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-1677?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-1677 published?
- CVE-2020-1677 was published on 2020-10-16 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:juniper:mist_cloud_ui:*:*:*:*:*:*:*:*
More vulnerabilities in Juniper Mist Cloud Ui
- CVE-2020-1675 — High (CVSS 8.3): When Security Assertion Markup Language (SAML) authentication is enabled, Juniper Networks Mist Cloud UI might…
- CVE-2020-1676 — High (CVSS 7.2): When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle SAML responses, allowing a…
All CVEs affecting Juniper Mist Cloud Ui →
Other CWE-345 (Insufficient Verification of Data Authenticity) vulnerabilities
- CVE-2026-35051 — Critical (CVSS 10.0): Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is an…
- CVE-2014-8165 — Critical (CVSS 10.0): scripts/amsvis/powerpcAMS/amsnet.py in powerpc-utils-python uses the pickle Python module unsafely, which allows remote…
- CVE-2026-50195 — Critical (CVSS 9.9): containerd is an open-source container runtime. Versions prior to 2.3.2, 2.2.5 and 2.1.9 contain a vulnerability in the…
- CVE-2022-36130 — Critical (CVSS 9.9): HashiCorp Boundary up to 0.10.1 did not properly perform data integrity checks to ensure the resources were associated…
- CVE-2026-50214 — Critical (CVSS 9.8): The /v1/Plan service relies entirely on a shared global API token for full administrative management, allowing…
- CVE-2025-15385 — Critical (CVSS 9.8): Insufficient Verification of Data Authenticity vulnerability in TECNO Mobile com.Afmobi.Boomplayer allows…
Browse all CWE-345 (Insufficient Verification of Data Authenticity) vulnerabilities →