ngtcp2
Security Risk Profile
46
/100
mediumSecurity Risk Score
Comprehensive risk assessment based on 3 vulnerabilities, EPSS scores, exploitation status, and remediation availability.
📅 Data spans from November 25, 2024 to present
3
Total CVEs
2
Critical+High
0
Exploited
1
Unpatched
Threat Assessment
Avg CVSS
7.9
Base severity
Avg EPSS
0%
Exploit probability
Unpatched
1
Critical/High
Risk Level
46/100
medium
Severity Distribution
Critical
0High
2Medium
0Low
0Exploit Likelihood
>50% chance
020-50%
05-20%
0<5%
0Age Distribution
Common Weaknesses (CWE)
1
Buffer Overflow
2
Most Affected Products
1. ngtcp2 ngtcp23
2. nghttp2 Ngtcp21
3. debian/ngtcp21
Recent Vulnerabilities
See more →https://seclists.org/oss-sec/2026/q2/166
unknown
ngtcp2: qlog_parameters_set_transport_params_stack_overflow [CVE-2026-40170]
4/17/2026🔧 No Patch
CVE-2026-40170
CVSS 7.5high
ngtcp2 has a qlog transport parameter serialization stack buffer overflow
4/16/2026
CVE-2024-52811
CVSS 8.2high
Acks not validated before logged to qlog leads to buffer overflow in ngtcp2
11/25/2024🔧 No Patch
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