Is CVE-2009-2620 actively exploited?

CVE-2009-2620 has no public evidence of in-the-wild exploitation as of 2025-10-10.

What is the CVSS score for CVE-2009-2620?

CVE-2009-2620 has a CVSS score of 5 (UNKNOWN severity). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P.

How do I patch CVE-2009-2620?

Patch guidance is available from firebirdsql security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2009-2620.

CVE-2009-2620 - remediation guidance & executive summary

Q: Which products are affected by CVE-2009-2620?

6 products: firebirdsql firebird, firebirdsql firebird, firebirdsql firebird, firebirdsql firebird, firebirdsql firebird, and 1 more.

Description

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.

CVSS Metrics

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector: network
Access Cmplx: low
Auth: none
Confidentiality: none
Integrity: none
Availability: partial
Weaknesses: CWE-20 · Improper Input Validation

Metadata

Primary Vendor: FIREBIRDSQL
Published: 7/29/2009
Last Modified: 10/10/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

firebirdsql : firebirdfirebirdsql : firebirdfirebirdsql : firebirdfirebirdsql : firebirdfirebirdsql : firebirdfirebirdsql : firebird

Remediation Guidance

Executive Summary

View on NIST NVD