How severe is CVE-2019-17654?

CVE-2019-17654 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-17654 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-2019-17654?

CVE-2019-17654 primarily affects Fortinet Fortimanager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-17654?

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-2019-17654 published?

CVE-2019-17654 was published on 2020-03-15 and last updated on 2026-06-17.

CVE-2019-17654

CVE-2019-17654 is a high-severity vulnerability in Fortinet Fortimanager with a CVSS 3.x base score of 8.8. 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-345.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Fortinet Fortimanager
Published: 2020-03-15
Last modified: 2026-06-17

Description

An Insufficient Verification of Data Authenticity vulnerability in FortiManager 6.2.1, 6.2.0, 6.0.6 and below may allow an unauthenticated attacker to perform a Cross-Site WebSocket Hijacking (CSWSH) attack.

Frequently asked questions

What is CVE-2019-17654?: An Insufficient Verification of Data Authenticity vulnerability in FortiManager 6.2.1, 6.2.0, 6.0.6 and below may allow an unauthenticated attacker to perform a Cross-Site WebSocket Hijacking (CSWSH) attack.
How severe is CVE-2019-17654?: CVE-2019-17654 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-17654 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-2019-17654?: CVE-2019-17654 primarily affects Fortinet Fortimanager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-17654?: 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-2019-17654 published?: CVE-2019-17654 was published on 2020-03-15 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-19-191

Affected products (3)

cpe:2.3:a:fortinet:fortimanager:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimanager:6.2.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortimanager:6.2.1:*:*:*:*:*:*:*

More vulnerabilities in Fortinet Fortimanager

CVE-2026-24858 — Critical (CVSS 9.8): An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet…
CVE-2023-25610 — Critical (CVSS 9.8): A buffer underwrite ('buffer underflow') vulnerability in the administrative interface of Fortinet FortiOS version…
CVE-2024-47575 — Critical (CVSS 9.8): A missing authentication for critical function in FortiManager 7.6.0, FortiManager 7.4.0 through 7.4.4, FortiManager…
CVE-2015-3613 — Critical (CVSS 9.8): A vulnerability exists in in FortiManager 5.2.1 and earlier and 5.0.10 and earlier in the WebUI FTP backup page
CVE-2019-6695 — Critical (CVSS 9.8): Lack of root file system integrity checking in Fortinet FortiManager VM application images of 6.2.0, 6.0.6 and below…
CVE-2024-48886 — Critical (CVSS 9.0): A weak authentication in Fortinet FortiOS versions 7.4.0 through 7.4.4, 7.2.0 through 7.2.8, 7.0.0 through 7.0.15,…

All CVEs affecting Fortinet Fortimanager →

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 →