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CVE-2025-24975— Firebird Non-Authorized Access to Encrypted Database Using Execute Statement on External

Quick assessment

Affected
FirebirdSQL firebird
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Firebird是Firebird基金会的一套开源跨平台的提供多个ANSI SQL-92功能的关系型数据库管理系统。 Firebird 4.0.6.3183之前版本、5.0.2.1610之前版本和6.0.0.609之前版本存在代码问题漏洞，该漏洞源于ExtConnPool连接验证不足可能导致分段违规。

CVSS 7.1 · High EPSS 0.56% · P46

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-24975

Vulnerability Information
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Vulnerability Title
Firebird Non-Authorized Access to Encrypted Database Using Execute Statement on External
Source: CVE Program / CVE List V5
Vulnerability Description
Firebird is a relational database. Prior to snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609, Firebird is vulnerable if ExtConnPoolSize is not set equal to 0. If connections stored in ExtConnPool are not verified for presence and suitability of the CryptCallback interface is used when created versus what is available could result in a segfault in the server process. Encrypted databases, accessed by execute statement on external, may be accessed later by an attachment missing a key to that database. In a case when execute statement are chained, segfault may happen. Additionally, the segfault may affect unencrypted databases. This issue has been patched in snapshot versions 4.0.6.3183, 5.0.2.1610, and 6.0.0.609 and point releases 4.0.6 and 5.0.2. A workaround for this issue involves setting ExtConnPoolSize equal to 0 in firebird.conf.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
Firebird 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Firebird是Firebird基金会的一套开源跨平台的提供多个ANSI SQL-92功能的关系型数据库管理系统。 Firebird 4.0.6.3183之前版本、5.0.2.1610之前版本和6.0.0.609之前版本存在代码问题漏洞，该漏洞源于ExtConnPool连接验证不足可能导致分段违规。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FirebirdSQL firebird < 6.0.0.609 -

II. Public POCs for CVE-2025-24975

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7683 chars
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Trigger conditions & impact
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III. Intelligence Information for CVE-2025-24975

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Vendor Advisories for CVE-2025-24975 (1)

IV. Related Vulnerabilities

Same product: firebird
Same vendor: FirebirdSQL
Same weakness: CWE-754