CVE-2026-6412
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk0th percentile - higher than 0% of all known CVEs
Summary
The vulnerability concerns issues with certificate policy and RFC 8446 compliance, involving the continued acceptance of SHA-1 and MD5 algorithms in certificate processing.
Risk Assessment
The risk involves the potential exploitation of weak hash functions (SHA-1, MD5) to forge certificates, which could lead to man-in-the-middle attacks or impersonation of trusted entities.
Recommendation
It is recommended to disable acceptance of certificates using SHA-1 and MD5, and update the software to a version compliant with RFC 8446, which mandates the use of stronger cryptographic algorithms.
Related vulnerabilities
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- CVE-2026-124577Critical
A weakness has been identified in Intelbras SG 2404 PoE L2+ versions 1.00.70 and 1.00.72, affecting an unknown function in the /EXCU_SHELL file within the Web Management Interface component. Manipulation can lead to improper authentication. The attack can be launched remotely and the exploit has been made publicly available.
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Buffer overflow in the data receiving process in NEC WebSAM WinShare versions 7.5.0 and earlier, 7.6.0, and 7.7.0 through 7.7.2 on Windows allows a remote unauthenticated attacker to execute arbitrary code with SYSTEM privileges via a crafted packet with a malformed data size value in the protocol header.
- CVE-2026-113363Critical
Improper input validation in the network communication processing in NEC WebSAM WinShare versions 7.2.0 through 7.5.0, 7.6.0, and 7.7.0 through 7.7.2 on Windows allows a remote unauthenticated attacker to execute arbitrary commands with SYSTEM privileges via a crafted network packet sent to the computer running WinShare.
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IBM Concert 1.0 through 3.0.1.1 allows an attacker to supply crafted input that is incorporated into an operating system command without adequate validation or sanitization. Successful exploitation allows remote attackers to execute arbitrary commands on the underlying operating system with the privileges of the affected service.
- CVE-2026-17466Critical
IBM Optim versions 1.0.0, 1.1.0, and 1.2.0 are vulnerable to path traversal, allowing a remote authenticated attacker to obtain sensitive information.
- CVE-2026-15266Critical
IBM Concert 1.0 through 3.0.1.1 contains components that allow potentially unsafe command execution, which could be exploited to run arbitrary system commands on the host.
- CVE-2026-114464Critical
IBM Process Mining 2.0.0 through 2.2.1 has improper access control, which could allow a remote attacker to obtain sensitive information.
Original NVD description (English source)
Certificate policy and RFC 8446 compliance concerns regarding the continued acceptance of SHA-1/MD5 in certificate processing.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

