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TI-2021-17889 Aliases CVE-2021-41025GHSA-rvmf-qfpg-9qgj

Race condition in Fortinet FortiWeb

Priority MEDIUM 51CWE-362Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Multiple vulnerabilities in the authentication mechanism of confd in FortiWeb versions 6.4.1, 6.4.0, 6.3.0 through 6.3.15, 6.2.0 through 6.2.6, 6.1.0 through 6.1.2, 6.0.0 thorugh 6.0.7, including an instance of concurrent execution using shared resource with improper synchronization and one of authentication bypass by capture-replay, may allow a remote unauthenticated attacker to circumvent the authentication process and authenticate as a legitimate cluster peer.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01492 74th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortinet FortiWebFortiWeb 6.4.1, 6.4.0, 6.3.0 through 6.3.15, 6.2.0 through 6.2.6, 6.1.0 through 6.1.2, 6.0.0 thorugh 6.0.7—No fix listedCNA
  • Fortinet FortiWeb VendorFortinet Affected FortiWeb 6.4.1, 6.4.0, 6.3.0 through 6.3.15, 6.2.0 through 6.2.6, 6.1.0 through 6.1.2, 6.0.0 thorugh 6.0.7 Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*6.0.0 – 6.0.7; 6.2.0 – 6.2.6; 6.3.0 – 6.3.15VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:6.1.0:*:*:*:*:*:*:*6.1.0VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:6.1.1:*:*:*:*:*:*:*6.1.1VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:6.1.2:*:*:*:*:*:*:*6.1.2VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:6.4.0:*:*:*:*:*:*:*6.4.0VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:6.4.1:*:*:*:*:*:*:*6.4.1VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:6.4.2:*:*:*:*:*:*:*6.4.2VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* Versions 6.0.0 – 6.0.7; 6.2.0 – 6.2.6; 6.3.0 – 6.3.15 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:6.1.0:*:*:*:*:*:*:* Versions 6.1.0 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:6.1.1:*:*:*:*:*:*:* Versions 6.1.1 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:6.1.2:*:*:*:*:*:*:* Versions 6.1.2 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:6.4.0:*:*:*:*:*:*:* Versions 6.4.0 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:6.4.1:*:*:*:*:*:*:* Versions 6.4.1 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:6.4.2:*:*:*:*:*:*:* Versions 6.4.2 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41025
  2. 2026-10-03 Alias added: GHSA-rvmf-qfpg-9qgj

References

Patch 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-39856 Path traversal in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-18919 SQL injection in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-35886 OS command injection in Fortinet FortiWeb KEVCVSS 3.1MEDIUM 6.7
  • TI-2021-05113 OS command injection in Fortinet FortiWeb CVSS 3.1HIGH 8.8
  • TI-2021-18960 Stack-based buffer overflow in Fortinet FortiWeb CVSS 3.1CRITICAL 9.8
See all 125 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences