Vulnerability · Published Oct 31, 2025 · Assigned by Neo4j
CVE-2025-11602Untargeted information leak in Bolt protocol handshake
Medium 6.3
In plain English
A medium-severity security flaw in Community Edition from neo4j. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 4.0)6.3Medium
Exploit odds (30 days)0.3%top 74.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| neo4j | Enterprise Edition | 5.26.0 – before 5.26.152025.1.0 – before 2025.10.1 |
| neo4j | Community Edition | 5.26.0 – before 5.26.152025.1.0 – before 2025.10.1 |
Weakness: CWE-226 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/V:D/U:Clear
References
- https://neo4j.com/security/cve-2025-11602 vendor-advisory