CVE-2021-42756

Published Feb 16, 2023 CVSS 3.1 · 9.3 Critical EPSS 35.2% KEV · Not listed
Description
Multiple stack-based buffer overflow vulnerabilities [CWE-121] in the proxy daemon of FortiWeb 5.x all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4 all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests.

Remediation

Vendor Solution

Upgrade to FortiWeb 7.0.0 or above, Upgrade to FortiWeb 6.3.17 or above, Upgrade to FortiWeb 6.2.7 or above. Upgrade to FortiWeb 6.1.3 or above. Upgrade to FortiWeb 6.0.8 or above.

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
fortinet
Published
Updated
Oct 23, 2024, 2:49 PM
Reserved
Oct 20, 2021, 5:44 PM
Status
Modified
Published
Feb 16, 2023, 7:15 PM
Modified
Jun 17, 2026, 4:10 AM