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CVE-2025-53844

Quick assessment

Affected
Fortinet FortiOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fortinet FortiOS是美国飞塔（Fortinet）公司的一套专用于FortiGate网络安全平台上的安全操作系统。该系统为用户提供防火墙、防病毒、IPSec/SSLVPN、Web内容过滤和反垃圾邮件等多种安全功能。 Fortinet FortiOS 7.6.0至7.6.3版本、7.4.0至7.4.8版本和7.2.0至7.2.11版本存在缓冲区错误漏洞，该漏洞源于越界写入，可能导致攻击者通过特制数据包执行未经授权的代码或命令。

CVSS 8.3 · High EPSS 0.56% · P44

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 7

VendorProduct Version RangeStatus
Fortinet FortiOS 7.6.0≤ 7.6.3 affected
7.4.0≤ 7.4.8 affected
7.2.0≤ 7.2.11 affected
7.0.0≤ 7.0.17 affected
6.4.0≤ 6.4.16 affected
6.2.0≤ 6.2.17 affected
6.0.0≤ 6.0.18 affected
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I. Basic Information for CVE-2025-53844

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiOS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiOS是美国飞塔（Fortinet）公司的一套专用于FortiGate网络安全平台上的安全操作系统。该系统为用户提供防火墙、防病毒、IPSec/SSLVPN、Web内容过滤和反垃圾邮件等多种安全功能。 Fortinet FortiOS 7.6.0至7.6.3版本、7.4.0至7.4.8版本和7.2.0至7.2.11版本存在缓冲区错误漏洞，该漏洞源于越界写入，可能导致攻击者通过特制数据包执行未经授权的代码或命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Fortinet FortiOS 7.6.0 ~ 7.6.3 cpe:2.3:o:fortinet:fortios:7.6.3:*:*:*:*:*:*:*

II. Public POCs for CVE-2025-53844

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III. Intelligence Information for CVE-2025-53844

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Vendor Advisories for CVE-2025-53844 (1)

Same Patch Batch · Fortinet · 2026-05-12 · 11 CVEs total

CVE-2026-26083 9.1 CRITICAL Fortinet FortiSandbox 安全漏洞
CVE-2026-44277 9.1 CRITICAL Fortinet FortiAuthenticator 访问控制错误漏洞
CVE-2025-53870 6.5 MEDIUM Fortinet FortiAP 操作系统命令注入漏洞
CVE-2025-53681 6.3 MEDIUM Fortinet FortiMail SQL注入漏洞
CVE-2025-53680 6.1 MEDIUM Fortinet FortiAP 操作系统命令注入漏洞
CVE-2025-67604 5.2 MEDIUM Fortinet FortiAnalyzer 安全漏洞
CVE-2026-25088 5.1 MEDIUM Fortinet FortiNDR SQL注入漏洞
CVE-2026-44279 5.0 MEDIUM Fortinet FortiTokenAndroid 安全漏洞
CVE-2026-25690 4.0 MEDIUM Fortinet FortiDeceptor 参数注入漏洞
CVE-2026-44278 2.1 LOW Fortinet FortiClientWindows 安全漏洞

IV. Related Vulnerabilities

Same product: FortiOS
Same vendor: Fortinet
Same weakness: CWE-787

V. Comments for CVE-2025-53844

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