How severe is CVE-2020-1676?

CVE-2020-1676 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-2020-1676 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1676?

CVE-2020-1676 affects Juniper Mist Cloud Ui. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-1676?

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-2020-1676 published?

CVE-2020-1676 was published on 2020-10-16 and last updated on 2026-06-17.

CVE-2020-1676

CVE-2020-1676 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 4.3
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Juniper Mist Cloud Ui
Published: 2020-10-16
Last modified: 2026-06-17

Description

When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle 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-2020-1676?: When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle 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-2020-1676?: CVE-2020-1676 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-2020-1676 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1676?: CVE-2020-1676 affects Juniper Mist Cloud Ui. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-1676?: 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-2020-1676 published?: CVE-2020-1676 was published on 2020-10-16 and last updated on 2026-06-17.

References

https://kb.juniper.net/JSA11072

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-2020-1677 — High (CVSS 7.2): When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML…

All CVEs affecting Juniper Mist Cloud Ui →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48056 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download video content. Versions prior to 2.5.0…
CVE-2026-33267 — Critical (CVSS 10.0): Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.2.0…
CVE-2026-47668 — Critical (CVSS 10.0): DbGate is cross-platform database manager. In versions 7.1.8 and prior, DbGate's JSON script runner (`POST…
CVE-2026-16117 — Critical (CVSS 10.0): Impact: @fastify/http-proxy versions up to and including 11.5.0 fail to rewrite the request prefix when the prefix…
CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →