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CVE-2023-26209

MEDIUM
5.3
CVSS Score
Published: March 9, 2023 at 02:55 PM UTC
Updated: June 17, 2026 at 05:42 AM UTC
1 product affected across 1 vendorFortiDeceptor

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Severity
MEDIUM5.3
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

A improper restriction of excessive authentication attempts vulnerability [CWE-307] in Fortinet FortiDeceptor 3.1.x and before allows a remote unauthenticated attacker to partially exhaust CPU and memory via sending numerous HTTP requests to the login form.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FortiDeceptor· Fortinet
95%
1.0.0 ≤ v ≤ 1.0.11.0.0 ≤ v < 3.2.03.0.0 ≤ v ≤ 3.0.23.1.0 ≤ v ≤ 3.1.11.0.01.1.02.0.02.1.03.0.03.1.0
Affected range stops below 3.2.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://fortiguard.com/psirt/FG-IR-20-078

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-307

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