basicsecurity.net
Proof, not just disclosure.
Threats / Fortinet / CVE-2025-64446
CVE-2025-64446 · EUVD no mirror located · GCVE no mirror located Verified 2026-06-22

Fortinet FortiWeb vulnerability

Fortinet FortiWeb contains a relative path traversal vulnerability allowing unauthenticated attackers to execute administrative commands via crafted HTTP/HTTPS requests.

Verdict

Today item — known-exploited.

An unauthenticated remote attacker can exploit path traversal to bypass access controls and execute arbitrary administrative commands on FortiWeb systems, leading to complete compromise.

CISA KEV Yes · 2025-11-143EPSS 0.89526 (verify live)4Exploit Weaponized · public PoC5
01

Is it exploitable?

— the evidence, ranked above the score
Exploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
169 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-11-14).
CISA KEV ↗Confirmed
Probability (EPSS)
EPSS 0.89526 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Fortinet, FortiWeb. Confirm exact fixed builds in the vendor advisory.
NVD ↗Reported
Weakness (CWE)
Mapped to CWE-23 Relative Path Traversal — weakness family: Path traversal / file.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
NVD ↗Reported
WeaknessCWE-23 · Relative Path TraversalPath traversal / file
02

Who’s exploiting it?

— attribution turns risk into urgency
Attribution not established

No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.

03

Why it matters

— the attack path, told twice: adversary, then board
1

Front door — unauthenticated access narrative 1

Attacker
I craft HTTP or HTTPS requests with relative path traversal sequences to access restricted administrative functions without authentication.
Business
The organization loses administrative access control, enabling unauthorized system manipulation and configuration changes.
2

Keys to the kingdom — privilege/identity takeover narrative 2

Attacker
I execute administrative commands through the traversal vulnerability to modify firewall rules, disable logging, or alter security policies.
Business
Security monitoring and incident response capabilities are compromised, preventing detection of ongoing attacks.
3

Lateral reach — past segmentation narrative 3

Attacker
I leverage administrative command execution to establish persistence, create backdoor accounts, or exfiltrate sensitive configuration data.
Business
The organization faces data breach, loss of confidentiality, and extended dwell time for attackers within critical infrastructure.
04

What to do

— defensible action
  • Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05

Coverage & confidence

— what we know, and what we don’t

Established (cited)

  • KEV listing (CISA)
  • EPSS probability (FIRST)
  • Weaponized exploit available (VulnCheck)
  • 169 reported-exploitation source(s)
  • CWE weakness mapping (NVD)
  • Public exploit availability
  • Catalogued by fortinet (CNA)
  • Coverage gaps — stated, not hidden

  • No EUVD / GCVE mirror in feed — single-authority dependency for the identifier.
  • EPSS & exposure are time-varying; verify live at the source.
  • Threat-actor attribution not established from feed data — absence of a name is not absence of compromise.
  • No finder/reporter credit recorded in the public CVE entry — the work behind this find is unattributed.
  • Disclosure & credit2
    Catalogued by fortinetCNA
    Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.