6.5

CVE-2025-25252: fortinet fortios Insufficient Session Expiration

CVSS: 6.5v3.1MediumAnalyzed
Published 14-10-2025Last modified 13-09-2026
Open JSON

Vulnerability summary

CVE-2025-25252 is a medium (CVSS 6.5) Insufficient Session Expiration vulnerability in fortinet fortios. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 25.7% 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
0.34%
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. 13-09-2026
    Last modifiedVulnerability information updated.

Description

An Insufficient Session Expiration vulnerability [CWE-613] in FortiOS SSL VPN 7.6.0 through 7.6.2, 7.4.0 through 7.4.6, 7.2.0 through 7.2.10, 7.0.0 through 7.0.16, 6.4 all versions may allow a remote attacker (e.g. a former admin whose account was removed and whose session was terminated) in possession of the SAML record of a user session to access or re-open that session via re-use of SAML record.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

0.00 pp

From 0.34% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.34%

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
  • fortios≥ 7.6.0, ≤ 7.6.2 | ≥ 7.4.0, ≤ 7.4.6 | ≥ 7.2.0, ≤ 7.2.10 | ≥ 7.0.0, ≤ 7.0.16 | ≥ 6.4.0, ≤ 6.4.16 | ≥ 6.4.0, < 7.0.17 | ≥ 7.2.0, < 7.2.11 | ≥ 7.4.0, < 7.4.7 | ≥ 7.6.0, < 7.6.3

1 vendor · 1 product

References

1 links