Description
Firebird is a relational database. Prior to versions 3.0.13, 4.0.6, and 5.0.3, there is an XDR message parsing NULL pointer dereference denial-of-service vulnerability in Firebird. This specific flaw exists within the parsing of xdr message from client. It leads to NULL pointer dereference and DoS. This issue has been patched in versions 3.0.13, 4.0.6, and 5.0.3.
References (4)
Core 4
Core References
Third Party Advisory x_refsource_confirm
https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7qp6-hqxj-pjjp
Issue Tracking x_refsource_misc
https://github.com/FirebirdSQL/firebird/issues/8554
Patch x_refsource_misc
https://github.com/FirebirdSQL/firebird/commit/169da595f8693fc1a65a79c741724b1bc8db9f25
Scores
CVSS v3
5.3
EPSS
0.0026
EPSS Percentile
49.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-476
Status
published
Products (1)
firebirdsql/firebird
< 3.0.13
Published
Aug 15, 2025
Tracked Since
Feb 18, 2026