CVE-2025-65104

Firebird: Information leak vulnerability in firebird3 client when used with newer server

HIGH
7.5
CVSS Score
Published: April 17, 2026 at 05:47 PM UTC
Updated: October 7, 2026 at 09:10 AM UTC
1 product affected across 1 vendorFirebird

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Severity
HIGH7.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

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

v < 3.0.14v < 4.0.0
Affected range stops below 3.0.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.0, 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:

References (2)

x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.0

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-200NVD-CWE-noinfo

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