CVE-2026-62757
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk17th percentile - higher than 17% of all known CVEs
Summary
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to bypass a security feature over a network.
Risk Assessment
Bypassing a security feature by an unauthenticated attacker could compromise the integrity and confidentiality of encrypted communications.
Recommendation
Update Windows and monitor network traffic for suspicious connections.
Other vulnerabilities in Windows Schannel
See all- CVE-2026-85818Critical
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.
- CVE-2026-105008Critical
No cwe for this issue in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.
- CVE-2026-72940High
Heap-based buffer overflow in Windows Schannel allows an unauthorized attacker to execute code over a network.
- CVE-2026-70575Medium
Null pointer dereference in Windows Schannel allows an authorized attacker to cause a denial of service over a network.
- CVE-2026-62779High
Use after free in Windows Schannel allows an authorized attacker to elevate privileges locally.
- CVE-2026-56186High
Out-of-bounds read in Windows Schannel allows an authorized attacker to disclose information over a network.
Original NVD description (English source)
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to bypass a security feature over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS