Vulnerability

CVE-2018-13374

Medium· 4.3KEVEXPLOITCVSS4.3EPSS3%

.rules3/5

Fortinet FortiOS and FortiADC Improper Access Control Vulnerability

Fortinet FortiOS and FortiADC contain an improper access control vulnerability that allows attackers to obtain the LDAP server login credentials configured in FortiGate by pointing a LDAP server connectivity test request to a rogue LDAP server.

Threat signal

67/100

Elevated

Severity

medium

CVSS

4.3

EPSS

Active

KEV

CISA KEV — actively exploited

Ransomware: Known1353d overdue

AffectedFortinet — FortiOS and FortiADC

Added to KEV

2022-09-08

Federal patch due (BOD 22-01)

2022-09-29

Required action (CISA verbatim)

Apply updates per vendor instructions.

Vendor advisory + references

CISA description: “Fortinet FortiOS and FortiADC contain an improper access control vulnerability that allows attackers to obtain the LDAP server login credentials configured in FortiGate by pointing a LDAP server connectivity test request to a rogue LDAP server.”

CVSS

v3.1Open in FIRST calculator →

4.3/ 10MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredLowStandard user privileges sufficient.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactLowSome data disclosure; attacker doesn't fully control what.
Integrity ImpactNoneNo integrity impact.
Availability ImpactNoneNo availability impact.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

3.37%

probability of exploitation in next 30 days

p88

higher than 88% of all CVEs

3-day trend↑ 0pp

Mid-pack — moderate exploitation likelihood.

Vendor VEX

No VEX statements published for CVE-2018-13374. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAttend

Active exploitation with limited impact — coordinate patching

exploitation: active
automatable: no
impact: partial
mission: support

Lifecycle

2022-09-08Added to CISA KEVransomware: Known
2022-09-08Public exploit observedexploitdb
2022-09-08Published
2022-09-29Federal patch due (BOD 22-01)
2026-06-12Last modified1 source

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.