8.1

CVE-2025-64447: fortinet fortiweb

CVSS: 8.1v3.1HighAnalyzed
Published 09-12-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-64447 is a high (CVSS 8.1) vulnerability in fortinet fortiweb. EPSS estimates a 8.35% chance of exploitation in the next 30 days, higher than 94.9% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
8.35%
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. 09-12-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

A reliance on cookies without validation and integrity checking vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through 7.4.10, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an unauthenticated attacker to execute arbitrary operations on the system via crafted HTTP or HTTPS request via forged cookies, requiring prior knowledge of the FortiWeb serial number.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

8.35%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 8.35% on 22-09-2026

22-09-202622-10-2026
EPSS score
8.35%

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
  • fortiweb≥ 7.0.0, ≤ 7.0.11 | ≥ 7.2.0, ≤ 7.2.11 | ≥ 7.4.0, ≤ 7.4.10 | ≥ 7.6.0, ≤ 7.6.5 | ≥ 8.0.0, ≤ 8.0.1

1 vendor · 1 product

References

1 links