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Fencer Intel
critical 9.1

CVE-2018-13382 kev+ ransomware in the critical feed json

An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0…

published 7y ago modified 4mo ago also EUVD-2018-5326

cvss
9.1
version 3.1, CNA
cisa kev
Exploited
added 2022-01-10, used in ransomware
epss
81.7%
EPSS 81.7% chance of exploitation in 30 days, percentile 99.6%
public exploits
1
Exploit-DB

Summary

An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web portal allows an unauthenticated attacker to modify the password of an SSL VPN web portal user via specially crafted HTTP requests

Patch / fix

cisa required action Apply updates per vendor instructions.

  • fortinet fortiproxy 1.2.9
  • fortinet fortios 5.4.11, 5.6.9, 6.0.5

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Timeline

  1. Published
  2. First public exploit (EDB-49074)
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
4y ago
Patch by
2022-07-10 (4y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply updates per vendor instructions.
Vendor, product
Fortinet, FortiOS and FortiProxy
CISA name
Fortinet FortiOS and FortiProxy Improper Authorization

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
2y ago

Exploit prediction

81.69% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-49074 Fortinet FortiOS 6.0.4 - Unauthenticated SSL VPN User Password Modification webapps, 2020-11-19

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

  • Fortinet Fortinet FortiOS, FortiProxy

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.