6.5

CVE-2025-53845: fortinet fortianalyzer Improper Authentication

CVSS: 6.5v3.1MediumAnalyzed
Published 14-10-2025Last modified 14-01-2026
Open JSON

Vulnerability summary

CVE-2025-53845 is a medium (CVSS 6.5) Improper Authentication vulnerability in fortinet fortianalyzer. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.6% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.46%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-10-2025
    PublishedVulnerability first disclosed.
  2. 14-01-2026
    Last modifiedVulnerability information updated.

Description

An improper authentication vulnerability [CWE-287] in Fortinet FortiAnalyzer version 7.6.0 through 7.6.3 and before 7.4.6 allows an unauthenticated attacker to obtain information pertaining to the device's health and status, or cause a denial of service via crafted OFTP requests.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

0.00 pp

From 0.46% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Fortinet1 product
  • fortianalyzer≥ 7.6.0, ≤ 7.6.3 | ≥ 7.4.0, ≤ 7.4.6 | ≥ 7.2.0, ≤ 7.2.11 | ≥ 7.0.0, ≤ 7.0.15 | ≥ 6.4.0, ≤ 6.4.15 | ≥ 6.4.0, < 7.4.7 | ≥ 7.6.0, < 7.6.4

1 vendor · 1 product

References

1 links