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CVE-2025-11602

Untargeted information leak in Bolt protocol handshake

MEDIUM
6.3
CVSS Score
Published: October 31, 2025 at 10:20 AM UTC
Updated: October 18, 2026 at 09:10 PM UTC
1 product affected across 1 vendorNeo4j

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Potential information leak in bolt protocol handshake in Neo4j Enterprise and Community editions allows attacker to obtain one byte of information from previous connections. The attacker has no control over the information leaked in server responses.

Affected

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

Neo4j· NEO4J
90%
2025.1.0 ≤ v < 2025.10.15.26.0 ≤ v < 5.26.152025.1.05.26.0
Affected range stops below 2025.10.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.26.15, 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:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://neo4j.com/security/cve-2025-11602

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

6.3MEDIUMNeo4j
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-226

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