Firebird: Information leak vulnerability in firebird3 client when used with newer server
Priority LOW 34CWE-200Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
Firebird is an open-source relational database management system. In versions FB3 of the client library placed incorrect data length values into XSQLDA fields when communicating with FB4 or higher servers, resulting in an information leak. This issue is fixed by upgrading to the FB4 client or higher.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00185 8th percentileScored 2026-11-07
Fix Fixed firebird (FirebirdSQL): 4.0.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| FirebirdSQL | firebird | before 4.0.0 | 4.0.0 | Patch available | CNA |
- firebird VendorFirebirdSQL Affected before 4.0.0 Fixed in 4.0.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:* | before 3.0.14 | Vulnerable | FirebirdSQL |
- cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:* Versions before 3.0.14 Vulnerable ·FirebirdSQL
Remediation
- Fix · CNA firebird (FirebirdSQL) Fixed in 4.0.0
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2025-65104
References
More FirebirdSQL Firebird vulnerabilities
- TI-2026-22559 Firebird Null Pointer Dereference via CryptCallback causes DOS CVSS 3.1HIGH 8.2
- TI-2026-22234 Firebird has Pre-Auth DOS when Processing Out of Order CNCT_specific_data Segments CVSS 3.1HIGH 8.2
- TI-2026-27368 Firebird: DoS via malicious slice descriptor in slice packet CVSS 3.1HIGH 7.5
- TI-2026-26527 Firebird: DoS via `op_response` packet from client CVSS 3.1HIGH 7.5
- TI-2026-25747 Firebird has a buffer overflow when parsing corrupted slice packets CVSS 3.1HIGH 7.5
- TI-2026-22547 Firebird has potential server crash via null pointer dereference when processing op_slice packet CVSS 3.1HIGH 7.5
Sources
- CVE-2025-65104 · CVE Program
- CVE-2025-65104 · NVD
- FIRST EPSS
- CVE-2025-65104 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences