6.5

CVE-2026-25690: fortinet fortideceptor Argument Injection

CVSS: 6.5v3.1MediumAnalyzed
Published 12-05-2026Last modified 08-07-2026
Open JSON

Vulnerability summary

CVE-2026-25690 is a medium (CVSS 6.5) Argument Injection vulnerability in fortinet fortideceptor. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.7% 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
0.33%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-05-2026
    PublishedVulnerability first disclosed.
  2. 08-07-2026
    Last modifiedVulnerability information updated.

Description

An improper neutralization of argument delimiters in a command ('argument injection') vulnerability in Fortinet FortiDeceptor 6.0.0 through 6.0.2, FortiDeceptor 5.3.0 through 5.3.3, FortiDeceptor 5.2.0 through 5.2.1, FortiDeceptor 5.1 all versions, FortiDeceptor 5.0 all versions may allow an authenticated attacker with at least read-only admin permission to read log files via HTTP crafted requests.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

+0.09 pp

From 0.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.33%

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
  • fortideceptor≥ 5.2.0, ≤ 5.2.1 | 5.1.0 | 5.0.0 | ≥ 5.0.0, ≤ 5.1.0 | ≥ 5.3.0, ≤ 5.3.3 | ≥ 6.0.0, ≤ 6.0.2 | 5.2.0 | 5.2.1

1 vendor · 1 product

References

1 links