Vulnerability Intelligence Report
Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls
CVE-2026-32283
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.
No Active Exploit Signals
CVSS Base Score
7.5
HIGH
Exploitability:3.9
Impact Score:3.6
EPSS Probability:0.62%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-667 ↗CWE-667: Improper Locking
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Go standard library | crypto/tls | 0 < 1.25.9 (affected), 1.26.0-0 < 1.26.2 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.621%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Go Project · Vendor · USA |
| Reserved | 2026-03-11T16:38:46 |
| Published | 2026-04-08T01:06:57 |
| Last Updated | 2026-09-18T12:04:39 |
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