CVE-2025-61730

Handshake messages may be processed at the incorrect encryption level in crypto/tls

MEDIUM
5.3
CVSS Score
Published: January 28, 2026 at 07:30 PM UTC
Updated: June 17, 2026 at 09:50 AM UTC
2 products affected across 2 vendorsGoGo

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries (for instance the Client Hello and Encrypted Extensions messages), the subsequent messages may be processed before the encryption level changes. This can cause some minor information disclosure if a network-local attacker can inject messages during the handshake.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.24.121.25.0 ≤ v < 1.25.6
v < 1.24.121.25.0 ≤ v < 1.25.61.25.0
Affected range stops below 1.24.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.25.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

Patch
Source: cverecord
https://go.dev/cl/724120
Patch
Source: cverecord
https://go.dev/issue/76443
Vendor Advisory
Source: cverecord
https://pkg.go.dev/vuln/GO-2026-4340

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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