src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6…
Priority LOW 34CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1 before 2.1.3, and 2.5 before 2.5 Beta 2 allows remote attackers to cause a denial of service (daemon crash) via a malformed op_connect_request message that triggers an infinite loop or NULL pointer dereference.
Why it matters now
EPSS 0.08631 95th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:* | 1.5 to before 1.5.6; 2.0.0 to before 2.0.6; 2.1 to before 2.1.3 | Vulnerable | FirebirdSQL |
| cpe:2.3:a:firebirdsql:firebird:2.5.0:-:*:*:*:*:*:* | 2.5.0 | Vulnerable | FirebirdSQL |
| cpe:2.3:a:firebirdsql:firebird:2.5.0:alpha1:*:*:*:*:*:* | 2.5.0 alpha1 | Vulnerable | FirebirdSQL |
| cpe:2.3:a:firebirdsql:firebird:2.5.0:beta1:*:*:*:*:*:* | 2.5.0 beta1 | Vulnerable | FirebirdSQL |
- cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:* Versions 1.5 to before 1.5.6; 2.0.0 to before 2.0.6; 2.1 to before 2.1.3 Vulnerable ·FirebirdSQL
- cpe:2.3:a:firebirdsql:firebird:2.5.0:-:*:*:*:*:*:* Versions 2.5.0 Vulnerable ·FirebirdSQL
- cpe:2.3:a:firebirdsql:firebird:2.5.0:alpha1:*:*:*:*:*:* Versions 2.5.0 alpha1 Vulnerable ·FirebirdSQL
- cpe:2.3:a:firebirdsql:firebird:2.5.0:beta1:*:*:*:*:*:* Versions 2.5.0 beta1 Vulnerable ·FirebirdSQL
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2009-2620
- 2026-10-03 Alias added: GHSA-rp94-92gp-7q47
- 2026-10-13 EPSS moved to the 95th–99th percentile
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-2009-2620 · CVE Program
- CVE-2009-2620 · NVD
- FIRST EPSS
- GHSA-rp94-92gp-7q47 · GitHub Advisory Database · CC BY 4.0
- CVE-2009-2620 · 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