CVE-2025-57823Network attack vector

Authenticated device-log disclosure via forced browsing

Published Dec 9, 2025 · Updated Jan 14, 2026

Direct-request access control failure in Fortinet FortiAuthenticator allows remote authenticated users to read and download device logs. Specific log-view and download endpoints authorize sponsor accounts to retrieve device-log content that their role should not expose. Exploitation requires a valid account with at least sponsor permissions and exposes log confidentiality without reported write or service-interruption impact.

CVSS severityUnavailable
Unscored
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Direct-request access control failure in Fortinet FortiAuthenticator allows remote authenticated users to read and download device logs. Specific log-view and download endpoints authorize sponsor accounts to retrieve device-log content that their role should not expose. Exploitation requires a valid account with at least sponsor permissions and exposes log confidentiality without reported write or service-interruption impact.

The record

CVE
CVE-2025-57823
Published
Dec 9, 2025
Updated
Jan 14, 2026
Vendor
Fortinet
Product
FortiAuthenticator
Classifications
CWE-425, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.3.0 <=6.3.4
  2. Affected versionversion=6.4.0 <=6.4.10
  3. Affected versionversion=6.5.0 <=6.5.6
  4. Affected versionversion=6.6.0 <=6.6.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fortinet · FortiAuthenticatorversion=6.3.0 <=6.3.4; version=6.4.0 <=6.4.10; version=6.5.0 <=6.5.6; version=6.6.0 <=6.6.6

Published CVSS scores

2.6FortinetCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:P/RL:U/RC:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-425Direct Request ('Forced Browsing')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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