CVE-2021-26112

published 2022-04-06

CVE-2021-26112: Multiple stack-based buffer overflow vulnerabilities [CWE-121] both in network daemons and in the command line interpreter of FortiWAN before 4.5.9 may allow…

Priority P2 63 critical 9.8 CVSS 3.1

AV N AC L PR N UI N S U C H I H A H

Multiple stack-based buffer overflow vulnerabilities [CWE-121] both in network daemons and in the command line interpreter of FortiWAN before 4.5.9 may allow an unauthenticated attacker to potentially corrupt control data in memory and execute arbitrary code via specifically crafted requests.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
fortinet	fortinet_fortiwan	—	—
fortinet	fortiwan	<= 4.5.8	—
fortinet	fortiwan	—	—

Detection & IOCs extracted from sources · hover to see the quote

• → Target FortiWAN network daemons for stack-based buffer overflow attempts via specially crafted network requests from unauthenticated attackers ↗
• → Monitor FortiWAN command line interpreter for stack-based buffer overflow exploitation attempts from unauthenticated sources ↗

• · Vulnerability affects FortiWAN versions before 4.5.9; verify patched version is 4.5.9 or later to confirm remediation ↗

CVSS provenance

nvd v3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 7.5 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P

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