Vulnerability in Fortinet FortiOS
CVSS score
5.1
EPSS probability
%0.5
Risk score
0.0
Published
2 mo ago
Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%53
Short explanation
A stack-based buffer overflow in Fortinet FortiOS 7.6.1 to 7.6.6 allows unauthenticated attackers to execute arbitrary code via crafted sockets under specific proxy configurations. CVSS score is 5.1 (MEDIUM). Patch status is UNKNOWN. No fixed version is confirmed in public sources.
This vulnerability enables unauthenticated attackers to execute arbitrary code in the WAD daemon under specific proxy configurations, posing a risk to systems with exposed proxy services. Patch status is UNKNOWN, requiring vendor advisory review for remediation.
What should be done?
- Apply vendor-recommended patch from Fortinet PSIRT
- Disable explicit proxy with Kerberos and SOCKS if not required
- Ensure all affected versions are updated to a fixed version as per vendor advisory
The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.
Chain of evidence and sources
Fortinet FortiOS 7.6.1 ile 7.6.6 arasında bir stack tabanlı buffer overflow açıklığı, stack koruma ve ASLR'ı aşan, açıkta olan bir atakçının, özellikle kerberos kimlik doğrulama ve SOCKS etkinleştirilmiş açık proxy ile yapılandırılmış durumda, özellikle yapılandırılmış soketlerle istismar edebilmesini sağlar.
Açıklık, FortiOS, FortiPAM ve FortiProxy ürünlerinde belirtilen sürüm aralıklarına aittir ve CVSS 3.1 puanı 5.1 ile MEDIUM ciddiyetli bir açıklık olarak sınıflandırılmıştır.
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Show the technical text from the sources
A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled.
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CWE: CWE-121
Explanation produced with the local qwen3:4b-instruct model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.1 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD |
| 5.6 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L | NVD |
| 5.1 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-71407 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-71407 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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