CVE-2022-35846

CRITICAL

An improper restriction of excessive authentication attempts vulnerability [CWE-307] in FortiTester Telnet port 2.3.0 through 3.9.1, 4.0.0 through 4.2.0, 7.0.0 through 7.1.0 may allow an unauthenti...

Affects 1 product across 1 vendor.

BCS7.35
CVSS 3.19.8
EPSS0.8%
Percentile51th
PatchPatched
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-307: CWE-307
Related Attack Patterns (CAPEC)
CAPEC-16 Dictionary-based Password Attack
via CWE-307
CAPEC-565 Password Spraying
via CWE-307
CAPEC-49 Password Brute Forcing
via CWE-307
CAPEC-600 Credential Stuffing
via CWE-307
CAPEC-652 Use of Known Kerberos Credentials
via CWE-307
Show all 7

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ SAGE Intelligence — CITED Relevance Research Team

A vulnerability in FortiTester Telnet port allows unauthenticated attackers to perform brute force attacks to guess admin credentials due to improper restriction of excessive authentication attempts.

BSID: BS-2022-GLOBAL-322120-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

Is this CVE in your environment?

BreachSpider monitors your ICS/OT environment for vulnerabilities like this one. No agents or network access required. Free to start.

Check My Environment →
Frequently Asked Questions
What is CVE-2022-35846?
A vulnerability in FortiTester Telnet port allows unauthenticated attackers to perform brute force attacks to guess admin credentials due to improper restriction of excessive authentication attempts.
What is the CVSS score for CVE-2022-35846?
CVE-2022-35846 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 0.8%.
Is CVE-2022-35846 actively exploited?
No confirmed active exploitation of CVE-2022-35846 as of 2026-05-30.
How do I remediate CVE-2022-35846?
Priority: IMMEDIATE. Advisory: https://fortiguard.com/psirt/FG-IR-22-244 PSIRT: [email protected]
What systems are affected by CVE-2022-35846?
CVE-2022-35846 affects: Fortinet.
Vulnerability Details
CVE IDCVE-2022-35846
BSIDBS-2022-GLOBAL-322120-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published2022-10-18
Last Modified2024-11-21
ICS Relevance55%
Weakness (CWE)
CWE-307
Domains
NETWORK-INFRA
SourceNVD
Official Description

An improper restriction of excessive authentication attempts vulnerability [CWE-307] in FortiTester Telnet port 2.3.0 through 3.9.1, 4.0.0 through 4.2.0, 7.0.0 through 7.1.0 may allow an unauthenticated attacker to guess the credentials of an admin user via a brute force attack.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

The attack vector involves an unauthenticated attacker attempting to guess the admin credentials by repeatedly trying different combinations through the Telnet port. This is possible because the system does not adequately restrict the number of failed login attempts.

Exploitation Likelihood: HIGH

Affected Products
VendorProductFixed Version
Fortinet Fortitester —
Remediation
View Vendor Advisory →

Remediation Priority: IMMEDIATE

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: July 2026 | Threat Age: 1376 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
SAGE Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
SHA-512 Audit Hash5b44932c38171786dbff676a2f03398a852544c1b6be3dc0754efd2de6365290cb9157aba870131487a808e9c42b71b8c91be414d6b700a3f2bb01a563f5b669
Related CVEs affecting Fortinet
CVE-2005-3057 10.0 The FTP component in FortiGate 2.8 running FortiOS 2.8MR10 and v3beta, and ot... CVE-2024-47575 9.8 A missing authentication for critical function in FortiManager 7.6.0, FortiMa... CVE-2024-23109 9.8 An improper neutralization of special elements used in an os command ('os com... CVE-2024-23108 9.8 An improper neutralization of special elements used in an os command ('os com... CVE-2019-16153 9.8 A hard-coded password vulnerability in the Fortinet FortiSIEM database compon...
View all Fortinet CVEs →

Critical Severity - Know Your Exposure

A CVSS 9.8 vulnerability in your ICS environment cannot wait. BreachSpider maps critical CVEs to your specific assets and tells you what to fix first.

Check Your Assets Free →